Malicious PDF — malware analysis report

Static analysis result for SHA-256 70e896ceb6db7b19…

MALICIOUS

PDF

47.6 KB Created: 2020-09-11 01:40:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 86410164bb52186ff77745bf48f1afbd SHA-1: 04ceac8ea33375462b8be5b1adfbb2ce1d2df52a SHA-256: 70e896ceb6db7b19d3005d95beb74452b1dd20e9670572f6da877aad7cf64004
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to redirector infrastructure designed to phish users for information or lead them to malicious sites. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM indicate a high volume of suspicious outbound links, with one specifically identified as a lure for 'chomp sms pro apk free'. The ML classifier also strongly indicated 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.me/wix?keyword=chomp+sms+pro+apk+free In PDF document text
    • http://files.quantumology.net/uploads/1/3/1/6/131606113/vedovototuwepi_bewabozebu.pdfIn PDF document text
    • http://files.herecomesthyguide.com/uploads/1/3/1/4/131453022/eaebc6b.pdfIn PDF document text
    • http://visile.kgreigcpa.com/uploads/1/3/1/4/131438216/5924633.pdfIn PDF document text
    • http://zivizipar.fromplaygroundstopurpose.com/uploads/1/3/1/1/131164159/3923841.pdfIn PDF document text
    • http://files.gaindetalks.com/uploads/1/3/0/8/130874629/dojoja-kefuzegomoli-wadab.pdfIn PDF document text
    • http://pivenon.aimuniversitycolorado.org/uploads/1/3/1/3/131383613/a5a0b73915d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/3e5db3_fe2c289dc30146eb8bf6dff1ec84d414.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/510691_6f8c07353c894fbcb4e8c0ffb519fbd6.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/9e14ca_b8a3a5f7d13e403389d3e69fbaec42d8.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/607883_a6c60777ec034501bf36ea3a2cf5f75b.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5757/7122/files/nitererikefop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0250/2048/files/nonconformity_quotes_in_self_reliance.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9884/7896/files/vlc_video_player_free_for_ubuntu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/damegadunuje.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61C6 5076 bytes
SHA-256: 554ceae9c481d59b2e1cf06f142b6e448b4bd9715e951fbf7d570a3b05d8621d
font_01_sfnt_off000072d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72D5 12748 bytes
SHA-256: 7481f5d9ffb3a6514ce99ccdaeeedf875f763b69a14e875341965c4bcc8dd285
font_02_sfnt_off00009bef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BEF 16240 bytes
SHA-256: 3f9b7ffe8b05e759e6ab88eadc3a2ae9fecb968563d9c65bfe15d63969403378

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