Malicious PDF — malware analysis report

Static analysis result for SHA-256 abdc8367cf68d010…

MALICIOUS

PDF

41.3 KB Created: 2020-08-21 21:52:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 722ab653fc6b681ba33b83055bf90f30 SHA-1: f47b7c86e25e554eb0d0546becc329cf92c5f663 SHA-256: abdc8367cf68d0101a481f03f1a1415c8e7a9fb28bfac2989c268fb16399ed1d
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 of which point to a link farm hosted on Shopify. One critical heuristic firing indicates a PDF redirector link to 'ttraff.ru', which is known malicious infrastructure. The document body, though heavily obfuscated, also contains this URL and other Shopify links, suggesting a lure to external content. The primary attack pattern involves tricking the user into clicking the malicious redirector 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.ru/pify?keyword=semi+formal+dress+code+ladies In PDF document text
    • http://files.cejdentalaccountants.co.uk/uploads/1/3/0/7/130775853/winuve.pdfIn PDF document text
    • http://files.gardenincubator.org/uploads/1/3/1/4/131406735/3146367.pdfIn PDF document text
    • http://files.guettner.org/uploads/1/3/0/9/130970012/e808d.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/1/0437/3767/7989/files/final_fantasy_14_damage_meter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7978/5891/files/bsac_try_dive_medical_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/23582012054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1518/4290/files/17902520529.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6081/3208/files/kitakifegigiwerisedavexi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1153/7053/files/pumopomazal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5837/1496/files/rozavinuludorilifegor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kuvesagapixunijibofalase.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0466/5842/0901/files/vowitejika.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1610/1798/files/aimsun_manual_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0193/0143/files/tracing_abc_letters.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5995/3312/files/84365379993.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_off00006365.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6365 5272 bytes
SHA-256: 7248db2e071e4a27edf4071cb46fb354f3c9175d43f39ed08aeeaf3728c0a043
font_01_sfnt_off0000752e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x752E 10304 bytes
SHA-256: 21fe905d5d91c987eea855434a98657b39073e97e4aff653cf5e213580fde4a3

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