Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f8c5f4b9ae4f3b0…

MALICIOUS

PDF

47.7 KB Created: 2020-09-12 03:26:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5823d859b9f6b9578cfb4645207bb836 SHA-1: 773a40632714a014d439a177d28d060761f5c932 SHA-256: 6f8c5f4b9ae4f3b015794bf35f4fc90ab9c11b94d9a2cc42a7f920070e32a44c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external resources, many of which are part of a link farm designed to appear as legitimate research articles. The primary redirector URL, https://ttraff.me/wix?keyword=research+article+example+pdf, is flagged as malicious, indicating a phishing or malware distribution attempt. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://ttraff.me/wix?keyword=research+article+example+pdf In PDF document text
    • http://files.sbrathcormac.ie/uploads/1/3/2/8/132815050/wowadatijagoro_goforizedoz.pdfIn PDF document text
    • http://divinefe.earningadmission.com/uploads/1/3/1/3/131378970/7985851.pdfIn PDF document text
    • http://files.mprints.shop/uploads/1/3/1/4/131453018/3ce914215c3e.pdfIn PDF document text
    • http://files.pixiecovers.com/uploads/1/3/0/9/130969327/gulelifukov.pdfIn PDF document text
    • http://figenipe.ddjohnsonassociatesllc.com/uploads/1/3/0/8/130814579/1931964.pdfIn PDF document text
    • http://xepan.dalymanningopticians.com/uploads/1/3/0/8/130874198/405ccd.pdfIn PDF document text
    • http://jutemo.vhcministry.org/uploads/1/3/1/8/131856695/beriruju_zisukuluso_tepakevagitud_jirisi.pdfIn PDF document text
    • http://rufepovaf.flexosc.com/uploads/1/3/1/6/131606490/molit.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://static.usrfiles.com/ugd/02beb7_a7909b5ef58c4e04a88bedd4acb3d127.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/5360f8_69e28ac1fe22432e98c2b802cf850d51.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b73feb_465896b97e34431c9f7aa1ff7460956c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/8e7730_3ae160dc03d1432f893d3811ff0d8c00.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/921909_c7d634288f124f6983705fa5a38ab8c0.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/1cc7e8_0de5b86e2c534906b3bfc46118efcbe7.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_7c8bc529c4e34f1496d0b4591b5addac.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006dd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD4 5040 bytes
SHA-256: b83a48b0f830413e6188d35099d9377d07611cc9c55f770518a6fd4079a29139
font_01_sfnt_off00007efc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EFC 10792 bytes
SHA-256: 2f6c17ba1239d7bc0f0e2cef5217b375fb8441a097739fe054dc726e886e6959
font_02_sfnt_off0000a399.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA399 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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