Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a1d64337a9736f7…

MALICIOUS

PDF

42.9 KB Created: 2020-08-09 05:44:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d7c6d3fddba7d22719b79591a76136ed SHA-1: 363a8f3366b7a6454111fbdef7678fc30f5d07b4 SHA-256: 2a1d64337a9736f722ea9e78bdbeb2e6cd4ed1a782927e664ece0d41b8a0f979
152 Risk Score

Malware Insights

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

The PDF document was flagged by a critical heuristic for linking to known malicious redirector infrastructure. It also contains a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO manipulation tactic. The primary malicious URL identified is https://ttraff.com/pify?keyword=modern+web+application+architecture+pdf, which is likely used to redirect users to further malicious content. No scripts were extracted, and the document body was heavily obfuscated.

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.com/pify?keyword=modern+web+application+architecture+pdf
    • http://files.drsunnyimwang.com/uploads/1/3/0/7/130776081/lipimose-wituninifix.pdf
    • http://files.jonathancombsphotography.com/uploads/1/3/1/8/131871907/4647728.pdf
    • http://files.mskhor.com/uploads/1/3/2/6/132682570/fewogedawox-xabuguj-dajelenudunexo.pdf
    • https://cdn.shopify.com/s/files/1/0427/8275/2935/files/32855677281.pdf
    • https://cdn.shopify.com/s/files/1/0431/3382/9277/files/13840588156.pdf
    • https://cdn.shopify.com/s/files/1/0431/3671/2861/files/vaxul.pdf
    • https://cdn.shopify.com/s/files/1/0428/6650/7943/files/handbook_of_inorganic_compounds_perry.pdf
    • https://cdn.shopify.com/s/files/1/0437/6631/7205/files/kidodu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2308/1378/files/35898089028.pdf
    • https://cdn.shopify.com/s/files/1/0429/8699/5863/files/joint_variation_word_problems.pdf
    • https://cdn.shopify.com/s/files/1/0429/3125/7510/files/66151595933.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/42228357160.pdf
    • https://cdn.shopify.com/s/files/1/0437/9816/7713/files/90178380656.pdf
    • https://cdn.shopify.com/s/files/1/0437/5085/0709/files/tufuximifekekugegisofifir.pdf
    • https://cdn.shopify.com/s/files/1/0430/9155/8551/files/xbox_backup_creator.pdf
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/wasat.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a1c.bin
78a9d2cc1d204b557a72f52f89b6800b2e8719fc8cedc3e62b9dcb695aab2602		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A1C 5304 bytes
font_01_sfnt_off00007c39.bin
a17e72785571e3eb0a3179ea567dea18579dd441bb5725404766e19093f7c82a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C39 10140 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.