Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5690d38eed1b4f7…

MALICIOUS

PDF

46.3 KB Created: 2020-07-29 08:31:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9d055014a0e07801286b4001bc72539f SHA-1: 5f812e71d62dbbb4237da0c24f89f6f9a2349018 SHA-256: a5690d38eed1b4f70558dc369bc6008826499a9862c325837d6684063e887b79
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, flagged as a PDF link farm. One of these links, 'https://ttraff.cc/pify?keyword=algebra+word+problems+grade+6+with+answers', is identified as a malicious redirector. The document body, though heavily obfuscated, appears to contain text related to 'algebra word problems grade 6 with answers', suggesting a lure to attract users searching for educational content. 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=algebra+word+problems+grade+6+with+answers In PDF document text
    • http://files.ballatsmithycottage.com/uploads/1/3/1/3/131379181/moxalare_wobonop.pdfIn PDF document text
    • http://files.socalsocialscience.org/uploads/1/3/1/0/131070618/gegelubenenu.pdfIn PDF document text
    • http://files.stylisharms.com/uploads/1/3/1/6/131637125/2899436.pdfIn PDF document text
    • http://files.madras-culture.com/uploads/1/3/2/8/132814967/1661ebe4d4a6.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/1/0433/0687/7080/files/mituvazejuremoposanizama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3649/2444/files/muvidudam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5830/8006/files/50777989130.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7064/4631/files/78734538624.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8153/9488/files/watiledaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0930/9848/files/33642091753.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kofuka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4166/0826/files/gutife.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1020/1499/files/57608357976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0227/3697/files/wawiwovezufanejusafe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7341/3032/files/refafuzigopo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0213/3656/files/67509553968.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
🗂 Part of campaign: ballatsmithycottage.com 4 samples

Related samples 5

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_off000072e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72E5 5536 bytes
SHA-256: 0b7e4e810f5db6a45f814fbeda68f9488ded35397d5594bb513bdf5410f7a832
font_01_sfnt_off00008593.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8593 11308 bytes
SHA-256: 190e8cae8f3bbd185e1d26f61ea254ed3a48aff03c4e688303bdcf78b0da4903

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