Malicious PDF — malware analysis report

Static analysis result for SHA-256 46b1eb42f1b34d76…

MALICIOUS

PDF

144.7 KB Created: 2021-03-15 19:45:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 3b8592106369e185f397cb8e7c23877b SHA-1: 88ff64c6c3b7a8b3172ec5466c37202bac9b5a31 SHA-256: 46b1eb42f1b34d76de24a094b0a2d373faddd1bd26feefbee6a0e1e6ea5afe76
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many hosted on disposable domains, indicating a link farm designed to distribute traffic. ClamAV detected this as Pdf.Phishing.Trojan, and ML classifiers also flagged it as malicious. The presence of embedded URLs and the nature of the link farm suggest a phishing or malware distribution attempt, likely initiated via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9957

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://gimoguvi.ru/123?utm_term=nokia+android+one+models PDF link annotation
    • http://italy50wow.pro/how_to_make_your_sim_go_into_labor_cheat3mg72.pdfIn PDF document text
    • http://nomevufaneboja.mypressonline.com/22153336578.pdfIn PDF document text
    • http://mrshadow.net/rativodiwevaxbvg4a.pdfIn PDF document text
    • http://xoxuvajes.mywebcommunity.org/fezedujobuxivomi.pdfIn PDF document text
    • http://fit-italy.space/tone_it_up_collagen_reviewsf0d4o.pdfIn PDF document text
    • http://worldworkbook.com/how_to_reset_my_huawei_tracfoneymau4.pdfIn PDF document text
    • https://kofuwirobunugob.weebly.com/uploads/1/3/4/3/134318534/kulefisulopa-sesili-nokuviwirelujef.pdfIn PDF document text
    • https://remoruputudedux.weebly.com/uploads/1/3/4/0/134017090/8552261.pdfIn PDF document text
    • https://tixilumudesowor.weebly.com/uploads/1/3/6/0/136095614/3604993.pdfIn PDF document text
    • https://xidumalebuwun.weebly.com/uploads/1/3/4/8/134894794/kalozajivelosudunis.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://7fca5364-97a1-4441-b76e-d2c429a59218.filesusr.com/ugd/735424_8096a677f497461d8f704f6ad8278359.pdf?index=trueIn PDF document text
    • https://4647adb0-9c01-46a1-aef1-4380d5873f13.filesusr.com/ugd/edb4a7_2a41c0b095fa4b3b9faab619e966bd38.pdf?index=trueIn PDF document text
    • https://9610c43f-1b2a-4a8a-b660-75aaf3908198.filesusr.com/ugd/286fb8_2798d46a38cd4128a0df04375fa384f4.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dibedamoka/i_am_the_messenger_quotes.pdfIn PDF document text
    • https://ed36ca5d-e6e9-4caf-8bbb-3a8af5cfee16.filesusr.com/ugd/971556_f75f6d9ae3fa4043be1847b57f20e1b8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xukanomarexumu/guguturifowitode.pdfIn PDF document text
    • https://8964868a-aef6-4da0-9a9b-29de7c28e0c5.filesusr.com/ugd/b910ae_aee6687a6cc14e59816cbe2ee0a700bf.pdf?index=trueIn PDF document text
    • https://e301b21f-f707-426c-a094-6199d4b1a2d6.filesusr.com/ugd/f65518_b41484441d9a431898c546ca819faaa1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/povodijirig/40754578531.pdfIn PDF document text
    • https://a0f88182-e1f9-4a9c-ba22-d5ce004c6985.filesusr.com/ugd/2f3216_77ab52ec2dd24179a51e9ca4138bcf5d.pdf?index=trueIn PDF document text
    • https://994180ce-385f-4272-9833-4a204a825e0f.filesusr.com/ugd/ec0c41_0219fe4bd7bd49ce823eaf7248f758d1.pdf?index=trueIn PDF document text
    • http://zubiluwetij.myartsonline.com/casio_g_shock_rangeman_black_panther.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.orgIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001883f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1883F 22576 bytes
SHA-256: 28e695d32a05e861414401e6e71609be76ce4bae1ddbfd774ce1ea765aa4bd5b
font_01_sfnt_off0001d005.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D005 5004 bytes
SHA-256: b25d38fa23b230740ca8296e8314ef807661d022090e6666cff75ccda3c2525c
font_02_sfnt_off0001e0eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E0EB 9380 bytes
SHA-256: b2bf2f83efeb9bb007ddd10084a3330649ea512ed2512992d3f3bda57d5e059c
font_03_sfnt_off0001fb27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FB27 12392 bytes
SHA-256: 256eb7aaf607fde99bdf51bb6456e8937f860ddfa281311ab5b160bc7bc8c8a7
font_04_sfnt_off000224ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x224FF 4756 bytes
SHA-256: ae550dee49ef6b40cb97fd059d6aedff94b9dcbd920b948cabb245575e1b5ca9

Open this report in the interactive analyzer, or submit your own file for analysis.