Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef13e048f3425e1d…

MALICIOUS

PDF

45.4 KB Created: 2020-08-24 15:32:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 485ca2c103eb885e62361a83dd2a626f SHA-1: 9dcf7d4df9cfe53bcd357eeb335229ece1d7ccc7 SHA-256: ef13e048f3425e1d59b7ad408499cdda341cbdfafb22daeb4502c7abdac8825c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in Systems T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, directing users to 'ttraff.cc'. The document body, though heavily obfuscated, contains the same URL and appears to be a lure related to 'dress code formal attire'. The file also exhibits characteristics of a link farm, with numerous embedded URLs pointing to Shopify domains, likely for SEO manipulation to increase visibility of the malicious redirector. No scripts were extracted from this sample.

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=dress+code+formal+attire+adalah In PDF document text
    • http://tokinak.griphs.com/uploads/1/3/1/1/131164110/640e64e7f.pdfIn PDF document text
    • http://pejefa.achievewe.org/uploads/1/3/2/7/132740930/rogebapinatibo_bodebumirodi.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/1/0431/5050/8194/files/kokitufexaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8489/7692/files/put_these_sentences_into_negative_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5870/8118/files/71520421160.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9807/0426/files/kogotuwunazub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8951/6962/files/cambridge_audio_dacmagic_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0521/3854/files/57880396628.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8451/3444/files/1998_toyota_4runner_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4016/9374/files/balanceamento_qumico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4947/4453/files/arnhem_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7994/9718/files/bulitevozofemaruba.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_off00007484.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7484 5260 bytes
SHA-256: 71b421a789fd175e945883b9dcf48b356406a7da2992b2341f402e38327e74ad
font_01_sfnt_off00008636.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8636 10224 bytes
SHA-256: b034928cab7c0391b7623117f41210897adb51934f3a176a3a94c885402447ee

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