Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8e67b0e44338575…

MALICIOUS

PDF

39.0 KB Created: 2020-08-28 02:41:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 38e0e6ba922ebecc045568cbd4bbcc59 SHA-1: f161a11a9a3165a760adc706622546f7ef6cec24 SHA-256: a8e67b0e44338575450c43a918b36520889e4aa6ba4a5a2864e81eb5af297d08
194 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing a malicious redirector link and a large number of external PDF links, indicating a link farm. The embedded URL points to a redirector, which likely leads to malicious content. The document body contains garbled text but also includes the malicious URL and several benign-looking Shopify URLs, suggesting a lure or obfuscation tactic.

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=chicco+umbrella+stroller+replacement+parts In PDF document text
    • http://files.jaynajennings.net/uploads/1/3/1/0/131069763/zitufamixulibuz.pdfIn PDF document text
    • http://lamapexal.vicksburgbands.com/uploads/1/3/0/7/130740522/5609362.pdfIn PDF document text
    • http://files.saversden.com/uploads/1/3/1/8/131871744/sabexenekaloxub.pdfIn PDF document text
    • http://wufaj.brandonchamberlain.com/uploads/1/3/1/3/131381204/zemaxi.pdfIn PDF document text
    • http://files.pristoopcuratorial.com/uploads/1/3/1/4/131437005/7cede8d8d085.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/1/0434/3670/3900/files/tuxiremedibokumegob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4449/4760/files/38924127768.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/71804232739.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29025511016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6903/6958/files/27945163991.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2834/8056/files/88684373530.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4526/5318/files/8098273316.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0885/1098/files/78198828025.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3296/1439/files/jagupixovitogimowinavodo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0426/4601/files/82386570345.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7373/1741/files/kindle_paperwhite_3_review.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6939/9452/files/mowagemederuxusaki.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 2

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_off00005a8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A8A 5220 bytes
SHA-256: 5e0a9f3c9bad3cbe0bf0fefa6478ee28fe216fe25a2911f46f784b1a602f88ef
font_01_sfnt_off00006c19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C19 10144 bytes
SHA-256: 0d4980bd8dab429c95aaf19b5d9ce1f7ac6598073c5132f4583a06721461db8f

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