Malicious PDF — malware analysis report

Static analysis result for SHA-256 2773f33e5cb83936…

MALICIOUS

PDF

48.2 KB Created: 2020-08-07 12:48:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5ac0e16d20f8db27c7a158a79d1f8df0 SHA-1: 18f2ff88b3480a9917e839236b1765ed378a7c63 SHA-256: 2773f33e5cb839365331e58a2b514e0d1fdf83df8e667ab3c52db0d0146fb0be
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a link farm. One of these links, https://ttraff.cc/pify?keyword=comprehensive+statistical+methods+pdf, points to known malicious redirector infrastructure. The primary purpose appears to be directing users to potentially harmful external sites, likely for SEO spam or phishing.

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=comprehensive+statistical+methods+pdf In PDF document text
    • http://files.godswaytshirts.com/uploads/1/3/2/3/132302815/7c24d7928c8eda5.pdfIn PDF document text
    • http://files.livingwordpub.com/uploads/1/3/0/7/130738504/1538540.pdfIn PDF document text
    • http://files.stampexinternational.com/uploads/1/3/1/4/131438464/9301556.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/1/0429/9925/1097/files/motley_crue_if_i_died_tomorrow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3179/7668/files/pasenuxavatovekewuvizi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2865/9874/files/brahmacharya_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3056/9382/files/15313987659.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0582/1599/files/zoragopuji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9801/3857/files/77716922910.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1007/2481/files/business_communication_today_11th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6954/6395/files/rogawski_calculus_solutions_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0182/2875/files/72944308438.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2518/6466/files/14821662314.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/ipl_2017_match_schedule.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_off00007aee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AEE 5360 bytes
SHA-256: cdde038389b0ca253f1882f163f0356c53c3d90421b8d0c4582f72a73ddf3422
font_01_sfnt_off00008cfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CFE 11392 bytes
SHA-256: 317eda04e170ac4b16e146e86ca7a1746f4fc59f2cb53850f928ff685549ca5e

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