Malicious PDF — malware analysis report

Static analysis result for SHA-256 1054e994697540bd…

MALICIOUS

PDF

44.2 KB Created: 2020-08-24 18:13:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 333e3072a74520cb72d9f0e15a9eae53 SHA-1: 231f7d1af5fb4a078c73d1f0765e4037148352d0 SHA-256: 1054e994697540bdf8a591bc6b8adc32d6680788636642cc18caca04805bb4b1
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.ru) that is flagged as malicious. The document body and embedded links suggest a lure for free downloads, likely a phishing or scam attempt. The ML classifier strongly indicated maliciousness, and the PDF structure itself is designed to host a large number of external links, consistent with SEO spam or link farm tactics.

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.ru/pify?keyword=word+family+sorting+worksheets In PDF document text
    • http://files.juliacellini.com/uploads/1/3/2/6/132681884/0f916f.pdfIn PDF document text
    • http://files.cloud9science.net/uploads/1/3/1/4/131437983/fudofodixolepa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6648/3103/files/jofemukukusajo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2865/9874/files/64067108000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1713/2442/files/rakadotuberoja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0090/5373/files/annual_report_apple.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4489/6925/files/gorazolavodafusaruwoges.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5850/3590/files/52938298293.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6000/1957/files/37533762420.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4994/3202/files/313075025.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3799/0813/files/75548304617.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0253/5840/files/49872199325.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4015/2475/files/lomuwiza.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 7

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60E2 5380 bytes
SHA-256: b8c961185963f56330511999d778e9167df8a3d5c457f5bf6f7b2f6c26896916
font_01_sfnt_off0000731d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x731D 10192 bytes
SHA-256: b790c487ebe4df8a9ed400912d981984cbccfb51c8ae48538672ef182080d996
font_02_sfnt_off00009604.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9604 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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