Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e951380fe1fe71f…

MALICIOUS

PDF

40.6 KB Created: 2020-08-24 17:26:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 38f27ad43e12cb9b335cc9185b847d9f SHA-1: aa2c81a7d1501f551f735eb5ac497d4476980715 SHA-256: 4e951380fe1fe71fc441593c79a679cae1a6e85ca1ed603a32fac89b3e3b410c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector. The document body, though partially corrupted, contains the URL 'https://ttraff.com/pify?keyword=performance+acceptance+criteria+example', which is also listed as a critical finding. This suggests the primary goal is to redirect users to malicious sites, likely for phishing or malware distribution. The presence of a large number of external PDF links, many hosted on Shopify, further supports the link farm tactic.

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=performance+acceptance+criteria+example In PDF document text
    • http://files.sheerramjohn.com/uploads/1/3/1/4/131438557/lavowanajosezet_mawuwazi_kizexav_rofijew.pdfIn PDF document text
    • http://files.lizboultonart.com/uploads/1/3/1/4/131483147/c62825af.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/1/0430/7868/0730/files/beautiful_in_white_piano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8212/1377/files/19423488680.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8023/6702/files/christafari_christmas_album_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/6791/1842/files/pathophysiology_ivan_damjanov_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8231/7975/files/labifune.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/1158/0577/files/clinical_examination_essentials_4th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2063/9646/files/american_english_file_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/walej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5156/3670/files/dna_structure_and_function_study_guide_worksheet.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000597a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x597A 5052 bytes
SHA-256: de1e6f96acb4ba7e26f977964bc4fa888e55fd4bb60fa4938a12f2d7742eba26
font_01_sfnt_off00006a8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A8D 1800 bytes
SHA-256: e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d
font_02_sfnt_off0000731b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x731B 10100 bytes
SHA-256: 3a375eb87f27209cf4638ce1270b348f4656d66f7c39abb5838cb21fa5aaebc2

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