Malicious PDF — malware analysis report

Static analysis result for SHA-256 bda108531bf9d341…

MALICIOUS

PDF

49.7 KB Created: 2020-08-09 11:13:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6ac25f7aeab41c51be25dfdb8b91ee79 SHA-1: 5e12dc8f81e0fde9a3e3c78df311892b34ec8385 SHA-256: bda108531bf9d3417daf8fd9991d5c78c3ad2c143ec055c836ac89980499eed8
234 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=apprendre+le+russe+livre+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many of which point to Shopify domains. The document body, though heavily obfuscated, contains the malicious URL, suggesting the document's primary purpose is to redirect users to this malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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=apprendre+le+russe+livre+pdf In PDF document text
    • http://files.arenewedhope.com/uploads/1/3/0/8/130814717/wadawuzirel_pamimukajuda_faluso.pdfIn PDF document text
    • http://files.europeandeliriumassociation.com/uploads/1/3/0/7/130738969/zodotipukot.pdfIn PDF document text
    • http://files.leahcarolinejones.com/uploads/1/3/1/3/131379343/1c5d2a5214b6fe.pdfIn PDF document text
    • http://bemapawe.collegeofdentalsurgeonsbritishcolumbia.com/uploads/1/3/0/7/130739024/lezokupiwesopipuna.pdfIn PDF document text
    • http://mowek.fieldsofbeing.com/uploads/1/3/1/3/131398140/merowevagibunubigup.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/1/0439/3651/4216/files/definition_of_policy_analysis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2004/1886/files/26329239039.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49186839350.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9973/2633/files/58685054109.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65545430121.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8954/2809/files/mufemuju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6350/1222/files/jabumatanaxona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5663/6828/files/xaxuda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2273/6798/files/kawetakajegosos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9812/1119/files/check_plagiarism_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3531/8689/files/11939260129.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5187/6509/files/nuvizamiweburom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3573/7764/files/52599209631.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0607/3759/files/57966110990.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8858/0512/files/define_bailment.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008033.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8033 4872 bytes
SHA-256: b021d8d40f49e6bce1daa8f4cf2373eae9aa80d1b598b4b76058912e05b18180
font_01_sfnt_off000090e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90E0 12696 bytes
SHA-256: a42a3a9c98fb9f80aebf8be4599e2f1a032f5910fdca6bf2c70c3de802dedb93