Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e3ad2a06c5815ba…

MALICIOUS

PDF

40.3 KB Created: 2020-08-13 23:29:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8deb6f75ed9e8e033b3c5b4c07799bd9 SHA-1: d52ba6447023f80c760e992ff57848c7f3d8f4a7 SHA-256: 0e3ad2a06c5815bab2314a16a5c45c7f228ed611375801ba0610fd62a3c279ad
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Asylum game chapter 2 answers' and includes the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of many external PDF links further indicates a link farm or redirection strategy.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=asylum+game+chapter+2+answers
    • http://files.tnkauctionservice.com/uploads/1/3/0/7/130738823/1866766.pdf
    • http://ditadixes.hissyfitcoons.com/uploads/1/3/0/8/130814328/91fa71.pdf
    • http://files.ebooks-by-crooks.com/uploads/1/3/2/7/132710678/wuvoramidigagixe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/4519/1841/files/gulapor.pdf
    • https://cdn.shopify.com/s/files/1/0448/0316/2263/files/alcohols_phenols_and_ethers_class_12.pdf
    • https://cdn.shopify.com/s/files/1/0431/4752/6305/files/wugujizenogipeli.pdf
    • https://cdn.shopify.com/s/files/1/0434/1504/4254/files/ziredinapiwi.pdf
    • https://cdn.shopify.com/s/files/1/0439/0499/1400/files/classification_of_living_things_webquest_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0434/0059/3557/files/ergot_alkaloids.pdf
    • https://cdn.shopify.com/s/files/1/0430/0007/0307/files/35624302176.pdf
    • https://cdn.shopify.com/s/files/1/0430/0147/9321/files/rejoma.pdf
    • https://cdn.shopify.com/s/files/1/0431/3199/4280/files/23508044196.pdf
    • https://cdn.shopify.com/s/files/1/0435/5896/1315/files/tawapavuvajidamasivizup.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f37.bin
1fef6ba06d6aaa86cf1a7d1128b45b1d4387b2ab331d85d4b08c8d2557f38958
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F37 5664 bytes
font_01_sfnt_off0000726b.bin
00135037b0991658d10204b5c5e03bd98d7993399185953a5af01f07af79f26d
pdf-font-stream PDF embedded font (sfnt) at offset 0x726B 10080 bytes