Malicious PDF — malware analysis report

Static analysis result for SHA-256 018a606564d452d7…

MALICIOUS

PDF

77.4 KB Created: 2020-11-03 20:56:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-08
MD5: 2b30bef4ea2e701717c7cb6ad6a90dff SHA-1: a916cf79c8e0eee9d07e26358cf3086f52426d7c SHA-256: 018a606564d452d7d289a4eba9ee7eebd1a3c66464bf09b4cdf20dee023ffc1d
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://ggtraff.ru/strik?keyword=roblox+bee+swarm+simulator+codes+2020+wiki In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366647/normal_5f87524bd2d37.pdfIn PDF document text
    • https://s3.amazonaws.com/juvuraguvutoxif/agatha_christie_mousetrap_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/kosipefojaw/ap_us_history_unit_1_study_guide.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405414/normal_5f9da88b32f97.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/cenchrus_ciliaris.pdfIn PDF document text
    • https://kidogotetivi.weebly.com/uploads/1/3/4/3/134375399/dobuxem.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379500/normal_5f8d82398b2d1.pdfIn PDF document text
    • https://s3.amazonaws.com/poresi/printable_funeral_invitations_free_templates.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/7354785.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369779/normal_5f9709ceb3e6d.pdfIn PDF document text
    • https://s3.amazonaws.com/sitok/20929337619.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403543/normal_5f91fe461fea5.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/schoology_isd_194.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_01_sfnt_off0000b7ae.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_01_sfnt_off0000b7ae.bin)
    • 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
    • https://savannah.gnu.org/projects/freefont/In extracted file (font_00_sfnt_off0000a7ba.bin)
    • http://www.gnu.org/licenses/In extracted file (font_00_sfnt_off0000a7ba.bin)
    • http://www.gnu.org/copyleft/gpl.htmlIn extracted file (font_00_sfnt_off0000a7ba.bin)
    • http://scripts.sil.org/OFLIn extracted file (font_01_sfnt_off0000b7ae.bin)
    • http://dejavu.sourceforge.netIn extracted file (font_04_sfnt_off00010e3c.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_04_sfnt_off00010e3c.bin)

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a7ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7BA 6440 bytes
SHA-256: 3d4760ca295192c89086870ebbac49c5a5945404ea6ab57fca452cf2db5f569a
font_01_sfnt_off0000b7ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB7AE 5728 bytes
SHA-256: e628e88dd3bd04dcd33becdf69dd6406d197e07d187a8b030dda9cc1891c4c61
font_02_sfnt_off0000cb29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB29 8260 bytes
SHA-256: 6f035ee928f9b294dec6b970a36a456b3ede8279edb9f0a77c8ca89d0d3f7bc1
font_03_sfnt_off0000e671.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE671 12004 bytes
SHA-256: a136fbc4177f547df6f30e98ddd3af05f6a286a49e0399a27df5a96de560b952
font_04_sfnt_off00010e3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E3C 17468 bytes
SHA-256: 1b71a8aa0ddeb218d8510d3b5eedfed059eff53427cadc1df062a206cafefa62