Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b1c6321de3e2a93…

MALICIOUS

PDF

51.9 KB Created: 2020-09-17 00:23:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae75e987d31101297e376c880d3b27ed SHA-1: 310bfaf3b99fa7ad0cc99f7a4a6670fc99afb3b5 SHA-256: 7b1c6321de3e2a93dab0a60c6f7b1f888f58c697ca90d20ba58b935b7c27db6f
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically `https://ttraff.link/wix?keyword=the+house+on+mango+street+journal+guide+answers+chapter+9`. The document body, though heavily obfuscated, contains this URL and other embedded URLs, suggesting a phishing or malware distribution attempt. The presence of numerous PDF links also indicates a link farm, likely to obscure the malicious destination.

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.link/wix?keyword=the+house+on+mango+street+journal+guide+answers+chapter+9
    • http://futodig.ncasemocha.com/uploads/1/3/2/8/132816091/8634961.pdf
    • http://vosufogi.bleststudio.com/uploads/1/3/0/7/130775511/wesukakez_mafal_juxavix.pdf
    • http://files.marriedtotheauthor.com/uploads/1/3/1/0/131071167/2521d841f9.pdf
    • http://javejurux.ivcoalition.com/uploads/1/3/1/4/131407005/wulakaw.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://32e27446-d0c3-478f-bb97-42bdedbf5b22.filesusr.com/ugd/ab922d_3f1f9e29617f4d0bb052468b97ae7c9c.pdf?index=true
    • https://8cdaf0f0-f468-425f-a201-5f9b474de5ad.filesusr.com/ugd/bb10c5_f3392b026d444817b95ecb2c2952aa40.pdf?index=true
    • https://e92aa988-3294-42fc-a83f-84a2e1a4c15b.filesusr.com/ugd/625844_6665ecbd7b0f485984808f28123b4c7c.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0429/1526/6713/files/carcassonne_the_castle_rules.pdf
    • https://cdn.shopify.com/s/files/1/0436/0021/6232/files/antibiotic_classification_and_uses.pdf
    • https://cdn.shopify.com/s/files/1/0432/0667/2546/files/zeraxavusawovixovu.pdf
    • https://cdn.shopify.com/s/files/1/0437/1369/1799/files/circle_of_fifths_guitar_fretboard.pdf
    • https://cdn.shopify.com/s/files/1/0469/0011/7664/files/vaguduvopo.pdf
    • https://cdn.shopify.com/s/files/1/0434/6930/8061/files/vovifug.pdf
    • https://cdn.shopify.com/s/files/1/0430/2379/4337/files/70224545974.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_off00008a35.bin
e76401daa5e490e150a13a012c847d3668e51fdebb5ae18325c582f68398131c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A35 5760 bytes
font_01_sfnt_off00009db7.bin
69fea82244423133224e7e8c9ebd5cb5b6f08bbe66253dd61f5400709942f94e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DB7 10656 bytes

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