Malicious PDF — malware analysis report

Static analysis result for SHA-256 18de62bfcb6bbe05…

MALICIOUS

PDF

38.1 KB Created: 2020-08-10 21:09:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1f27d9253a4114e1d5555564ed7ef9ec SHA-1: c261048d68645901d36e18070d85a605a2531877 SHA-256: 18de62bfcb6bbe05b65d1fd664cb76b3a030d252316e7949f7b476636b39b2d2
194 Risk Score

Malware Insights

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

The PDF document contains numerous links to external PDFs, many hosted on Shopify, and a primary link to a redirector at 'ttraff.com'. This suggests a link farm or SEO poisoning tactic to drive traffic to malicious infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=biology+matters+textbook+pdf+free', indicating a lure for free content that redirects to a malicious site. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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=biology+matters+textbook+pdf+free In PDF document text
    • http://files.reallywildadventures.co.uk/uploads/1/3/0/7/130739686/begigef_rijajipa_lusuka_xadenew.pdfIn PDF document text
    • http://topowov.netdevz.com/uploads/1/3/1/4/131438428/0b3ae0f.pdfIn PDF document text
    • http://files.teambirths.com/uploads/1/3/1/3/131380728/rudabevugeloji-vivozemojim-gefowu.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/1/0430/8546/3713/files/xiwufepivedid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1733/1100/files/duganoxedim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1570/7551/files/q13_news_anchors.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0624/6557/files/98080262094.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9356/5342/files/vowoxibedofox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0936/7461/files/joliset.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4587/8950/files/22176186908.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/76107107996.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/71358765696.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9438/5575/files/gta_v_cheats_ps3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0732/7904/files/volvo_240_repair_manual.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_off000055f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55F2 5784 bytes
SHA-256: f0e0cab9368ba91bc68d2dd659021a5f8e34c3f907bbc86b566c199f8fabebf6
font_01_sfnt_off00006994.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6994 10104 bytes
SHA-256: 04c4cfd0ff419c454b649eccb947934bccbadaa33e98f30e352e8a6a83499dd4

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