Malicious PDF — malware analysis report

Static analysis result for SHA-256 978779fed5c38514…

MALICIOUS

PDF

45.1 KB Created: 2020-08-20 05:21:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6a24d2d8ce92727215dc8fd354708e3c SHA-1: 6670629bbc16624f64567f98551c6b66b9cab9b5 SHA-256: 978779fed5c385142f471414e5b12c1407b61d92017c33ad5003d89092efbfdc
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Notorious BIG albums free', likely a lure to entice users to click the malicious link. The presence of a link farm further supports the malicious intent of directing users to potentially harmful sites.

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=notorious+big+albums++free In PDF document text
    • http://files.handwritingconsultants.com/uploads/1/3/1/3/131381693/ef886f73.pdfIn PDF document text
    • http://files.owlacorn.com/uploads/1/3/0/7/130738993/kuluralopuwire.pdfIn PDF document text
    • http://files.mesajuniors.com/uploads/1/3/1/4/131453749/8056776.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/1/0433/2571/8678/files/punosedem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3609/6150/files/wepasumoxagagusigugevaki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2202/3847/files/whatsapp_for_nokia_216_keypad_phone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/6181/0076/files/40907407579.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8003/1135/files/lifoni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5004/1495/files/58511435451.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4953/3088/files/cell_structure_and_function_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5207/1074/files/23706423518.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7354/5116/files/45546184867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6443/5612/files/bewivemabexatiduto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pafinekumukomotutawewokab.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
🗂 Part of campaign: mesajuniors.com 4 samples

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_off0000644d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x644D 5196 bytes
SHA-256: 5234da30a63ce5b9a8258c4541d99f35e893dc1ded13f70f8a894e4214718164
font_01_sfnt_off000075ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75ED 15564 bytes
SHA-256: 32288c84e7f5553af219d2455e0db878620e8151b9ad7ef55bf26cd52671819d

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