Malicious PDF — malware analysis report

Static analysis result for SHA-256 907080e81ce9f52a…

MALICIOUS

PDF

50.2 KB Created: 2020-08-10 01:06:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dcd661987b9078e2be45d8b319d7edc4 SHA-1: e539979c021771878d1f5c29e5e042c611e0ef35 SHA-256: 907080e81ce9f52a417ac03125219fad648aabc6747150d6abea9e4d0bf1bb3f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.cc. The document body, though heavily obfuscated, contains text related to 'Assignment abroad times newspaper jobs pdf', suggesting a lure to trick users into clicking these links. 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.cc/pify?keyword=assignment+abroad+times+newspaper+jobs+pdf In PDF document text
    • http://files.awesomealgebra.org/uploads/1/3/0/7/130775970/917927.pdfIn PDF document text
    • http://files.sdsurotaract.org/uploads/1/3/1/8/131856626/givasijomome.pdfIn PDF document text
    • http://bawajek.mtechadvisors.com/uploads/1/3/2/8/132814930/zatevakus.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/1/0428/3544/3875/files/craftsman_laser_level.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/6734/6839/files/enciclopedia_de_aperturas_de_ajedrez_sahovski_informator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5834/0774/files/xarorawuvufa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7311/7086/files/wojoribitemiwamibepew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2871/6439/files/safeju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3422/9398/files/tilifugasenufavirije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7389/6602/files/dolixezewijab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5118/6336/files/zosutomemidevagufebelip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4433/8838/files/guzibejajib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0426/4601/files/talorot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9571/8040/files/titijugume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1983/7346/files/gabewokixafekezatolunesi.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_off00007c1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C1F 5624 bytes
SHA-256: b2bb75e0d640e427f3f5b9fc9c4fbf070a9d50c3d0131dcb7bd6cd828ee13698
font_01_sfnt_off00008f37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F37 14208 bytes
SHA-256: b696e8dd3b62c8006650ef2563d4637c81d9a2ae6221f9502fd2af1e6d9ef213

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