Malicious PDF — malware analysis report

Static analysis result for SHA-256 62528cb306426efc…

MALICIOUS

PDF

39.1 KB Created: 2020-08-04 08:07:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e37d240cf8bd421095c9d7f833147c2e SHA-1: 37f381fd04eb5e341d5b225ecbeb4f06f8cdafd4 SHA-256: 62528cb306426efc5a7ce5e83a05bcfe9f4737dc14283c04107277e20d0d8990
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a lure for a "word to pdf converter app free download online" and embeds numerous links, many of which point to a redirector service known for malicious activity. The ML classifier also strongly indicated maliciousness. The embedded links likely serve to distribute further malicious content or phish for user credentials.

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=word+to+pdf+converter+app+free+download+online In PDF document text
    • http://files.thesingingsommelier.com/uploads/1/3/1/3/131397946/xajekapebolekijedug.pdfIn PDF document text
    • http://files.handsofhopegallup.com/uploads/1/3/0/8/130873826/6359311.pdfIn PDF document text
    • http://files.mbilder.com/uploads/1/3/1/4/131406816/1092288.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/1/0438/2975/6066/files/wivagasufoxiguwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6375/4404/files/fatapexofikozobew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0357/6481/files/96646655140.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81108552740.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3878/4158/files/what_is_the_plural_form_of_diagnosis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3876/7266/files/92471626046.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3019/9966/files/kuguxubenefilej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71061356311.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/31156963719.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_off00005d53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D53 5136 bytes
SHA-256: bfa23ade17116e55c590b18211eba471503745f2b9e3d52d682346f8c4c2c740
font_01_sfnt_off00006efe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EFE 9652 bytes
SHA-256: e0c550244115a983a092e0831daefdb18d1b7fd90fda804d0578ac4d12603615

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