Malicious PDF — malware analysis report

Static analysis result for SHA-256 795ac0345fd4e9ad…

MALICIOUS

PDF

39.5 KB Created: 2020-08-18 15:09:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0626c53b88f6528e92d83014872ab008 SHA-1: e1c01922c7ae1ec5b9f3e81d1c8057bcb42d72fe SHA-256: 795ac0345fd4e9ad52ee8f3a28c99651438c06224b88b3a972a1b312bdfabfd1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of links, many pointing to a redirector URL that is flagged as malicious. The document body text, though garbled, includes the phrase 'ereading worksheets author's purpose' and the malicious redirector URL, suggesting a lure for phishing or malware distribution. 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=ereading+worksheets+author%2527+s+purpose In PDF document text
    • http://jufudiz.mariachiherenciademexico.com/uploads/1/3/0/7/130740496/lidoxodak.pdfIn PDF document text
    • http://files.tearocksrocky.com/uploads/1/3/1/3/131381464/xijalogavuv.pdfIn PDF document text
    • http://files.lightbringerlabs.com/uploads/1/3/1/3/131398258/ganutuvapom.pdfIn PDF document text
    • http://files.oeorchestras.com/uploads/1/3/2/7/132710679/jobobezafetedevu.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/1/0438/2310/4160/files/24284099316.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5825/6286/files/36652103051.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2408/9242/files/53052721133.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/84344996298.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2843/8440/files/tiloxafivema.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6232/0536/files/niwoxumejomirigalulubap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9569/4239/files/3._5_monster_manual_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/7061/1613/files/fenuxuga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4069/3662/files/gibobanekonezutetorogewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7432/1560/files/rujiwebujadekegikivube.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9658/1020/files/pipebapojegerabat.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 2

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_off00005d22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D22 5336 bytes
SHA-256: 18439b283e90162ff0c237e10766cef8e216749a8ce41e42644f30ff36409a1c
font_01_sfnt_off00006f5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F5D 9872 bytes
SHA-256: 703230f6a1b3d528dc57d34df1e8014171deca7dd5734efc3c4ac1e560da1220

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