Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c60b6f7cb67cd78…

MALICIOUS

PDF

51.8 KB Created: 2020-08-04 07:33:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bdbbc13f51dcfca92563def93f33ee36 SHA-1: 38a1f823bfae71e2c82fa5773efcebf185cb74af SHA-256: 9c60b6f7cb67cd78d678e40c45bbf63b658385936ff40e081657cb7bce5d24f5
194 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO poisoning. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is used to obscure the final destination. The document body, though heavily obfuscated, contains the text 'Developmental psychology definition pdf' and the malicious redirector URL, indicating a lure to trick users into clicking the link. No scripts were extracted from this sample.

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=developmental+psychology+definition+pdf In PDF document text
    • http://files.ornamentsofexpression.com/uploads/1/3/1/4/131455883/vojosa.pdfIn PDF document text
    • http://files.primocelloceramics.com/uploads/1/3/1/4/131408415/e122f68.pdfIn PDF document text
    • http://files.dvrealworldlearning.com/uploads/1/3/1/3/131379946/7ce2c5.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/1/0432/2567/7982/files/nijufuriwezifufij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0709/9558/files/fekavefojezifatenadajav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9432/4888/files/10979914548.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/vojumedafalak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/85155057715.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7679/4008/files/sports_medicine_vocabulary_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wajumibuxup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1382/3909/files/27576302078.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4655/2227/files/64175443849.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7680/5018/files/dalutaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4267/6636/files/zilajusavowekijufadafaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4796/8149/files/phpstorm_2018._1_license_server.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_off00008ca1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CA1 5636 bytes
SHA-256: 7252d480282c446f9cfaaae79ec36781e2b2ba8d8be6ae73b0115a41dbab1cab
font_01_sfnt_off00009fc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FC5 10040 bytes
SHA-256: 8b3630e0c013862f39f001db9417f587900dc0d70772aff0a9b5c350e90d66cc

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