Malicious PDF — malware analysis report

Static analysis result for SHA-256 92f688995d1cc8ea…

MALICIOUS

PDF

40.5 KB Created: 2020-08-11 00:33:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e28f4b0ca969705bb747d85b5c56ad6b SHA-1: 41a973f0bace65d8e049774fbf1ccbc1ecb83216 SHA-256: 92f688995d1cc8ea87b73683978d65a26cd1d03cd48fd91d27ecdf3c4d9a8f7d
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical link to a known malicious redirector at 'https://ttraff.com/pify?keyword=a+an+the+no+articles+exercises+pdf'. This suggests the document's primary purpose is to redirect users to malicious infrastructure. 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.com/pify?keyword=a+an+the+no+articles+exercises+pdf In PDF document text
    • http://files.msgreenoughsvirtualguidanceoffice.ca/uploads/1/3/0/7/130738619/6724997.pdfIn PDF document text
    • http://jifudamu.abwmohio.org/uploads/1/3/2/6/132681647/netazisifawedi_jesutojizodage.pdfIn PDF document text
    • http://files.hwhusky.com/uploads/1/3/0/9/130969160/4fc79.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/1/0438/8339/7272/files/50973342927.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7665/7051/files/email_writing_activities.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2644/6498/files/rorawulajokulidejugap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5685/6230/files/sixesitodisewujola.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6020/8540/files/kejidejugiwudojom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5911/8229/files/tesaxotup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1031/0822/files/93329895626.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1633/1172/files/3032776523.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8239/1451/files/ragijipulute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5196/6873/files/16394626427.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0652/4566/files/40154264617.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2258/9853/files/60573610376.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 4

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_off000060d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60D2 5300 bytes
SHA-256: 516e1275ad821bbb91b5b474cfa59ed73122b6482b79d1f35a313123929dad8e
font_01_sfnt_off000072cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72CF 9960 bytes
SHA-256: 6c0b958fa9fedf61f7d951dfbf95d8665102699d69c9f7e7779869021f0880ce

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