Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1894c2ce0197235…

MALICIOUS

PDF

68.4 KB Created: 2020-08-03 14:52:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4e5c3998bda9ae4105aa4cb136240b32 SHA-1: d641a26bdd5f9e64b14f85eca6e1bc739f3fe38d SHA-256: d1894c2ce019723574a28a8d0e7f9be7c1971f2d7c95085e1915971f3d6b43fb
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying it as a malicious redirector. The document body, though partially corrupted, contains text referencing 'Amtrak california zephyr schedule pdf' and a URL pointing to a redirector, suggesting a phishing or malware delivery lure. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

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.com/pify?keyword=amtrak+california+zephyr+schedule+pdf In PDF document text
    • http://files.sendlovewith.com/uploads/1/3/2/6/132695445/vudegovu_ropez.pdfIn PDF document text
    • http://files.leatherworksfordogs.com/uploads/1/3/2/6/132682070/segunexevanisew.pdfIn PDF document text
    • http://files.animalhealthcentre.ca/uploads/1/3/2/6/132696335/soduw_duraperesejawi_binesoto.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/1/0431/5162/2306/files/44049452027.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5847/1846/files/43404775152.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6649/1042/files/winasoriraxemuxuvanomawa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7728/8611/files/dekibumu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5093/3156/files/fakek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5440/7580/files/9758811833.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8122/7672/files/jizovonuzoxozazo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0679/4651/files/siluvekemono.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4890/2554/files/lelivokagetexuwirumaro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8011/2545/files/sexajutevunikisunagotena.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6910/3528/files/manual_j_calculation.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
🗂 Part of campaign: leatherworksfordogs.com 3 samples

Related samples 5

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_off0000bcba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCBA 5600 bytes
SHA-256: d523302a1fc1873e2e76f06541602280f243ea513daf5e8fb325f6d15cbb0ea7
font_01_sfnt_off0000cfb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFB0 16356 bytes
SHA-256: e08188af207626861f07589b0120d348a800decff9d96f19540c781977836dc0

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