Malicious PDF — malware analysis report

Static analysis result for SHA-256 68db0690549f66c7…

MALICIOUS

PDF

63.8 KB Created: 2020-08-02 08:39:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5c71e22ea9c511093c04ae0622d9400d SHA-1: b27dd86d16b483b9de2b7cccf4ef4326a0b9eaf5 SHA-256: 68db0690549f66c7f773717ac9e004787664c664423d9734136c99ed19bd7eaa
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to appear as free downloads, but they redirect to a malicious infrastructure. The primary redirector URL is identified as malicious, and the document body, though heavily obfuscated, contains this URL. The ML classifier strongly indicates maliciousness.

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=serway+faughn+college+physics+7th+edition+pdf In PDF document text
    • http://files.yesternoir.org/uploads/1/3/1/4/131483031/50c050.pdfIn PDF document text
    • http://files.bethgabow.com/uploads/1/3/2/6/132682731/3318084.pdfIn PDF document text
    • http://files.mazeaudio.com/uploads/1/3/2/7/132740997/mejif_nidotezi_femovidapok_xanejavifuwafe.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/1/0433/7932/7141/files/subnautica_table_coral.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2174/5823/files/zagilu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8222/5566/files/73139340811.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8832/1435/files/lebibig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5573/5199/files/25583901102.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4368/4503/files/wewilozimojes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9316/4181/files/kazugitobotulategenaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3082/2555/files/vuxuzuxaxam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5880/7455/files/98974113475.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/50537202024.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2027/1259/files/pizewuvewasat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1841/1417/files/kifabewilepikujuxakov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0177/3212/files/jugejizuwusesujonuda.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 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_off0000b02c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB02C 5792 bytes
SHA-256: 79ab26ccf092f27a378f2200b62dece1de1aac626b852d9195dd71fef3aff184
font_01_sfnt_off0000c401.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC401 14528 bytes
SHA-256: 2b913485ff91a267375a42447f202ca00c29dc6371d7cf504f28ccedf83bbf91

Open this report in the interactive analyzer, or submit your own file for analysis.