Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbda925b658da6bb…

MALICIOUS

PDF

48.7 KB Created: 2020-08-02 17:03:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 88ada107493aba70d25771c3f4a5df92 SHA-1: 3ef9d7a4df9f306ddc8ec616691d9a9d09a34f77 SHA-256: dbda925b658da6bb528d80bc4308fabc64a80623576df74c8b6c311703f423d4
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify domains hosting PDF files. One critical heuristic identified a link to a known malicious redirector infrastructure at 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL, suggesting it is the primary lure. The presence of numerous links and the redirector indicate a phishing or scam 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/pify?keyword=wondershare+video+converter+ultimate+key In PDF document text
    • http://wubinut.jimmymooreguitar.com/uploads/1/3/1/4/131438539/78f489b3ab1a34.pdfIn PDF document text
    • http://files.upholsteringmelbourne.com.au/uploads/1/3/1/1/131164488/kugevixuxofugakafa.pdfIn PDF document text
    • http://files.theallergyfreezone.com/uploads/1/3/0/9/130969535/bexarulozaxiduxexuno.pdfIn PDF document text
    • http://files.justchryssbeauty.com/uploads/1/3/1/8/131871701/rexiruliwu.pdfIn PDF document text
    • http://files.davemcdermand.com/uploads/1/3/0/7/130739522/9328834.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/1/0432/0365/7887/files/sisigagixutisaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6965/1606/files/tumifuxikadajor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9122/1923/files/84530063876.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1869/0458/files/64461907673.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4809/2323/files/winerununiweve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8164/4697/files/reflected_in_you_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9531/7911/files/bulitidovinosijosuko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9456/5271/files/blade_runner_unicorn.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7143/9001/files/jimijunawuda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8106/3838/files/pawevifuxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9821/0461/files/16365436915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0364/9953/files/microsoft_visual_c_2008_redistributable_x64.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3899/6642/files/wiritima.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007244.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7244 5300 bytes
SHA-256: 61f34a885df2b209d67142ff42e9dcee3faea0be7155ce3251971995b93bf769
font_01_sfnt_off0000842b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x842B 10128 bytes
SHA-256: d29a444b5997c4a80175bbc3fd7beeb98df41b63889104c48c6ea5ef3a897f68
font_02_sfnt_off0000a6eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6EB 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176