Malicious PDF — malware analysis report

Static analysis result for SHA-256 adc1082b40bde14d…

MALICIOUS

PDF

46.0 KB Created: 2020-08-21 22:26:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 09e2c7c4a096f26550cd3536af0d293d SHA-1: 93b3ce94d37f2e4318f46e9f32ad4aeabaf1f594 SHA-256: adc1082b40bde14d0947431d251eb90b8a7b54c2909aee383f7cec7e783c47d7
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, suggesting a link farm. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is likely used to lure victims into a phishing or scam operation. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the primary attack vector appears to be the malicious redirection link.

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.com/pify?keyword=teacher+interview+questions+and+answers In PDF document text
    • http://files.livingdemocracy.info/uploads/1/3/1/4/131453484/wurep.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/1/0429/6887/5157/files/96209823134.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8481/5263/files/61782862813.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4478/9669/files/46437219571.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4023/4902/files/55113667838.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1073/4755/files/68536943828.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1460/9305/files/41086477906.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9321/3852/files/safety_warning_signs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6980/8550/files/82622794991.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7309/3288/files/bezubixavuwaxotupaledafap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0597/5462/files/tigray_amharic_dictionary.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 1

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_off0000691b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x691B 5104 bytes
SHA-256: 609296394099709643cddb67b6eeeaa194c7f322f5279c4306bd95c6a8a9a4e9
font_01_sfnt_off00007a7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A7C 10164 bytes
SHA-256: 040f0f32d5819619ed3e0e593c003c8c62996343a1cdb02ef1ed8996b3fb984e
font_02_sfnt_off00009d0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D0D 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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