Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7a737e782236125…

MALICIOUS

PDF

43.9 KB Created: 2020-08-28 00:12:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f7a45ddb0b9fc18c56abc41985a72107 SHA-1: f5d2ec449a6a72b70dc693ed49328c01371605ee SHA-256: a7a737e7822361259c567756302bcfbda1aa427fe39de3bf7a796f0c23052db3
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector infrastructure. The document body, though partially corrupted, contains text suggesting it is a lure for 'uncontested divorce forms ny pdf', which aligns with the redirector's keyword. The ML classifier strongly flagged this PDF as malicious. The primary attack pattern involves redirecting the user to malicious content via the embedded URL.

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.club/pify?keyword=uncontested+divorce+forms+ny+pdf In PDF document text
    • http://xuvopifa.thehockeyprofessor.org/uploads/1/3/0/8/130874426/lijulamuzo_dakow.pdfIn PDF document text
    • http://files.koamps.com/uploads/1/3/1/1/131164211/zibuf.pdfIn PDF document text
    • http://files.alexbuehler.com/uploads/1/3/2/8/132814969/7889934.pdfIn PDF document text
    • http://files.youandmesparkle.com/uploads/1/3/2/6/132695302/petogubivu.pdfIn PDF document text
    • http://files.piotrsadowski.org/uploads/1/3/1/0/131069968/tosiritegelupibarata.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/1/0430/8451/3440/files/9285902749.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5725/8395/files/functional_analysis_problems_and_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1504/4252/files/hydration_energy_lattice_energy_and_solubility.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5196/5855/files/57895389775.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3390/9665/files/pozofudaniwudij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3161/7945/files/how_to_auto_pictures_in_outlook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1843/5229/files/24450978840.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/9626/4094/files/sims_3_loading_screen_mod.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F7D 5212 bytes
SHA-256: c0325da0b8ff0e748e5c2a99ad65e453750eae3ecae8ddfb9967356b03660b1f
font_01_sfnt_off0000812c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x812C 9968 bytes
SHA-256: 7c8fa948c7c87d464a9e0e3838735c929a084dd962dc21ee8b5fa1244a256b9b

Open this report in the interactive analyzer, or submit your own file for analysis.