Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0e1b77ae94eb2ee…

MALICIOUS

PDF

44.1 KB Created: 2020-08-15 02:56:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: af017b79971fa4ed4ba27f72d2a5f21e SHA-1: 1ea8e376ae693155ed333bafcb5911dee54a4ff9 SHA-256: d0e1b77ae94eb2ee7880db274bd084e7b29f837de08ada6163dcd3b2f9d684ea
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass of external links, including a redirector to a malicious URL, disguised as a cheat sheet. The ML classifier strongly indicated maliciousness. The document body, though heavily obfuscated, contains the redirector URL and several other PDF links, suggesting a link farm or redirection strategy to deliver further payloads.

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.cc/pify?keyword=trig+derivative+identities+cheat+sheet In PDF document text
    • http://files.friendsofsfestuary.org/uploads/1/3/0/7/130776823/371612.pdfIn PDF document text
    • http://gevefujo.nhca-lions.org/uploads/1/3/0/7/130740537/1908699.pdfIn PDF document text
    • http://files.delsocialmedia.com/uploads/1/3/1/0/131070151/4747031.pdfIn PDF document text
    • http://dufegigib.3realms.ca/uploads/1/3/1/0/131070109/dorafepofi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4061/3286/files/tezakariroxafa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4617/4877/files/87468115048.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8042/3326/files/67114696506.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8764/3303/files/bedubefepizutob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7005/3784/files/17117068150.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4276/5991/files/fadoramifenirejipetek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1708/4839/files/vonudutobupeva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3348/5727/files/mifajerofanakisa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4381/4556/files/likif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20659662050.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9302/5183/files/free_postal_exam_473_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1143/1838/files/ara_ra_ra_marathi_dj_song.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 3

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000638e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x638E 5180 bytes
SHA-256: 679b98de4f64850a68c8e83346d73dce4d78633fa0505f9ebfef61ac06014f4d
font_01_sfnt_off00007523.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7523 14800 bytes
SHA-256: ccc970c3ef9a3f7bdbf4158e682c02a2da8382bb4aa57b3ca41cbdbe0f41a92d

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