Malicious PDF — malware analysis report

Static analysis result for SHA-256 11bca6db6d9c5b20…

MALICIOUS

PDF

87.4 KB Created: 2020-08-06 03:47:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 83653c38d87e0ccaefbe3b1ebe8fe27a SHA-1: d69d21a2e3a85bdd762c460aac177b630ca02b13 SHA-256: 11bca6db6d9c5b208cfe156c1bc30483c4e4cf66b49312aa05bf4a5348867935
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple heuristics indicating it's a malicious redirector, specifically designed to lure users to external sites via SEO tactics. The embedded URL 'https://ttraff.cc/pify?keyword=wavelet+transform+theory+pdf' is a known malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary purpose is to drive traffic to this malicious link, likely for phishing or malware distribution.

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=wavelet+transform+theory+pdf In PDF document text
    • http://lamamupev.joanbennettcelebrant.com/uploads/1/3/1/6/131607163/4964463.pdfIn PDF document text
    • http://files.cmtwaterhousings.com/uploads/1/3/1/3/131380456/zojed.pdfIn PDF document text
    • http://sutiwazi.ucsdnsysusymposium.org/uploads/1/3/1/3/131381428/5533802.pdfIn PDF document text
    • http://files.deafcan.org/uploads/1/3/1/3/131397946/dojarakuter.pdfIn PDF document text
    • http://files.cashfromtreasures.net/uploads/1/3/1/8/131871816/059d4402.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7952/4759/files/remobim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7637/1110/files/although_vs_despite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8740/0864/files/new_antidiabetic_drugs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/4974/1464/files/6_functions_of_nouns.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1854/3523/files/51770497792.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5491/5993/files/convert_multiple_ppt_to.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6022/3382/files/77012919945.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0495/2735/files/pazedamuzovivatasafoku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7410/1160/files/21273734898.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3480/4375/files/43007610782.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7313/2957/files/bodybuilding_muscles_anatomy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/67331216746.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7403/4600/files/18779583041.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4D7 5196 bytes
SHA-256: b7588e8238b06168134288ce5aef55eb2bf9be507f78fd613c16dc5d4bbe37f1
font_01_sfnt_off0000f668.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF668 16676 bytes
SHA-256: 424e01d9fe7d6017f98e7a4d0f1681d532bcb494eca1cee0db25f22402a0801f
font_02_sfnt_off00012a36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A36 16764 bytes
SHA-256: ed0304b13310518b1365a505073a62d1b78b5f5b4f56be4c4d8623d0775ddf8c
font_03_sfnt_off000141b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x141B6 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e