Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba33378931a9ceea…

MALICIOUS

PDF

41.3 KB Created: 2020-08-06 20:43:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7c158440da9089519d064616810838dc SHA-1: 87cba9d99ea49f990eaafea35b532aa5b433cb66 SHA-256: ba33378931a9ceeaaade1e3a0c1cc2eda05d2456921ecd49c6fef76c279008a9
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is disguised as a worksheet. The document also contains a large number of links to PDFs hosted on Shopify, likely for SEO manipulation to improve search engine ranking for malicious content. No scripts were extracted, but the presence of the malicious redirector and the SEO link farm strongly suggest a phishing or malware distribution attempt.

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=irregular%20verbs%20worksheet%20second%20grade In PDF document text
    • http://files.ipoggioli.com/uploads/1/3/0/8/130814056/ef49487b098d224.pdfIn PDF document text
    • http://files.williamsportnazarene.org/uploads/1/3/2/3/132302939/supabopa-tolulego-lositiwobavir.pdfIn PDF document text
    • http://files.wowpartyinvites.com/uploads/1/3/2/6/132682134/355d19424.pdfIn PDF document text
    • http://files.chocolatesyn.com/uploads/1/3/1/3/131379382/kodarajaxip-rilejafolaro-fabinen-lexeko.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/1/0433/7205/2634/files/67898853434.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31240515614.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8547/1656/files/gifawivadawumefav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8952/6951/files/eros_guide_chicago_xxx_stars.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2256/5032/files/75239035230.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7036/5589/files/5706863964.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6939/0500/files/gomixaguzazidor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1669/9553/files/9728545520.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3504/1693/files/85620944642.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0158/5570/files/84732733270.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1320/8226/files/gewabutupasus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6385/2708/files/mosobosuzejerorod.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000055de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55DE 5328 bytes
SHA-256: de1d9482f142a35dbdf0dee7eceea4ccfec9852af994b6431c9efb15723705a4
font_01_sfnt_off000067fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67FD 10004 bytes
SHA-256: 45215c6a621c6cf5874b46f8dd99b029769a8319015da9d221d93a2732b6a61c
font_02_sfnt_off00008a25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A25 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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