Malicious PDF — malware analysis report

Static analysis result for SHA-256 da7c1261fee7666f…

MALICIOUS

PDF

45.8 KB Created: 2020-08-19 00:27:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dbc252ad623e0a97f62892d350c38108 SHA-1: 2c6f8b2d2262ae584ca6132c4a3f78ad191de5f9 SHA-256: da7c1261fee7666fe22059bfa6520bb546a693f673e7fa9f804b1827209537f3
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.cc. The ML classifier also strongly indicated maliciousness. The document body text appears to be obfuscated or corrupted, but the presence of the malicious redirector URL suggests the primary intent is to redirect users to malicious content, likely for phishing or malware delivery.

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.cc/pify?keyword=the+animator%2527+s+survival+kit+francais+pdf In PDF document text
    • http://files.michaellathornton.com/uploads/1/3/1/3/131379296/xijujama.pdfIn PDF document text
    • http://files.stugreer.com/uploads/1/3/1/6/131606260/d8732daa17c.pdfIn PDF document text
    • http://kevozifiv.pollyauctions.com/uploads/1/3/0/8/130814328/4cd084.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/1/0432/3390/2760/files/kulosetip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0467/1646/files/calendario_escolar_malaga_2020_18.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1566/5826/files/kojimimatuladudikura.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3460/5728/files/81210363857.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4632/9750/files/17638881677.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8762/5369/files/how_to_watermark_videos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7641/8720/files/115_hp_mercury_outboard_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6778/2821/files/zefev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6299/2795/files/suforoto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6490/8181/files/arthritis_research_uk_neck_pain_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5650/4744/files/1273069039.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4931/1646/files/12945434003.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1958/3133/files/tekafitego.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000748a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x748A 5500 bytes
SHA-256: 99b60e780ab6eb56e6443ec9fa431f80fb7e99a56ad52b3f1259a66ceceb0326
font_01_sfnt_off0000871e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x871E 10292 bytes
SHA-256: 1835e5037b3aa616e0879f75778a8e5e283034619e0374f5a156b80bf847978f

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