Malicious PDF — malware analysis report

Static analysis result for SHA-256 04969209f4c3fb06…

MALICIOUS

PDF

46.5 KB Created: 2020-08-07 06:44:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 95799c973ce34c0ce3685c73b8b59021 SHA-1: 7a7654db0d7f38c962781652476290752ec5ee20 SHA-256: 04969209f4c3fb061da9c41cdfad35ceffd9d3cf0338839b153376b2fdccb4d2
194 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a redirector URL, which is flagged as malicious. The document body, though heavily obfuscated, contains text suggesting a lure related to 'Moca assessment scoring pdf'. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm strategy. The ML classifier also strongly indicates 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.ru/wb?keyword=moca%20assessment%20scoring%20pdf In PDF document text
    • http://files.communityofcrapaud.com/uploads/1/3/0/9/130969354/d24da19af.pdfIn PDF document text
    • http://files.mftwrites.com/uploads/1/3/2/6/132695995/fd3d998e275e26c.pdfIn PDF document text
    • http://files.marthaproject.com/uploads/1/3/0/7/130776864/4405407.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/1/0433/9705/4631/files/94526414343.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9923/5228/files/20421848201.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6011/7160/files/lorde_pure_heroine_zip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8114/6280/files/lekotaxizivifomomejexov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tanedikefiresemur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8721/6293/files/36934220756.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4146/2174/files/vlookup_function_in_excel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5298/0641/files/12823881969.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4836/8288/files/26278719841.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9348/9832/files/medufawikedoluvojuka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7723/7917/files/dudixosef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2961/7057/files/86270135249.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2778/4095/files/jipututogaxobelodixegex.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 3

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_off00006f86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F86 5448 bytes
SHA-256: 47b6ae93cc2b97c215d81f6acb1208e79fd04cead54c4f0ca2379177362727ac
font_01_sfnt_off00008206.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8206 13492 bytes
SHA-256: 3bbe094dfce84ad3cdd7a50317f56e3c42adf921a15931d6e3da38603d6cec46

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