Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fb156b2042fd871…

MALICIOUS

PDF

67.2 KB Created: 2021-03-17 23:00:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 595ec8bc7f3aa39169f39f9e85fe7683 SHA-1: 2ba8367f97ac7e74fb9fe9b1390d5a0ead9cc37a SHA-256: 6fb156b2042fd8711ab80bb0efb44c49f2a840797e055dd0d4bb12dedf5aa7f9
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 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.
  • 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://yafferge.ru/award?keyword=definition+of+culture+media+pdf In PDF document text
    • http://suzupuwejal.mygamesonline.org/1164138326.pdfIn PDF document text
    • http://xelasurugopu.mywebcommunity.org/dell_sound_drivers_free_download_for_windows_7.pdfIn PDF document text
    • https://cdn.sqhk.co/dodamewope/mfheCia/66638629458.pdfIn PDF document text
    • https://wimofitadaxota.weebly.com/uploads/1/3/4/3/134362004/30ab4a4a74c51b.pdfIn PDF document text
    • http://xolokeminapi.getenjoyment.net/9957055408.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485322/normal_601c6a78df7bc.pdfIn PDF document text
    • http://gazizelasama.getenjoyment.net/wusumawopelifivafonixobaf.pdfIn PDF document text
    • http://tonedomopoja.scienceontheweb.net/how_much_does_a_cleaner_earn_in_south_africa.pdfIn PDF document text
    • https://rorupuloloxotog.weebly.com/uploads/1/3/1/4/131409755/woviripa.pdfIn PDF document text
    • https://nuralizowipu.weebly.com/uploads/1/3/4/6/134693001/folusejagupasa-debezefafilu-rubopij-rarejajojox.pdfIn PDF document text
    • http://kagaromorin.medianewsonline.com/49188961439.pdfIn PDF document text
    • https://wipowolulufobud.weebly.com/uploads/1/3/1/4/131437369/dekevukibib_polajixazupu.pdfIn PDF document text
    • https://cdn.sqhk.co/dutebosatu/Yidxjiy/all_pickaxe_enchantments_minecraft_1._14.pdfIn PDF document text
    • http://warajuvevuv.medianewsonline.com/what_is_a_loop_in_programming_java.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459788/normal_5fcbf6ad1d5bb.pdfIn PDF document text
    • https://lisiruzefixa.weebly.com/uploads/1/3/4/4/134495270/1cba8b6b05.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tutafibinow.epizy.com/what_are_the_examples_of_biomes.pdfIn PDF document text
    • http://vilewol.epizy.com/foxit_reader_free_download_with_crack.pdfIn PDF document text
    • http://fibalikirikoti.epizy.com/14475237671.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cafd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAFD 5124 bytes
SHA-256: 373b58d944015247b35d81d0895f40cacc6ff9bb2943bd3c3a2e7ffddfa787e2
font_01_sfnt_off0000dc54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC54 9940 bytes
SHA-256: b1e095892b075f88a40bbe69fe71e439286a83829f088b3bf8de89d7afa7cc46

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