Malicious PDF — malware analysis report

Static analysis result for SHA-256 15fa00c856e4ffe1…

MALICIOUS

PDF

43.6 KB Created: 2020-08-08 18:57:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d197e0292c794cc6c73a476be7752974 SHA-1: b15e30772c7c305531273f3e98e9c87be6349b5f SHA-256: 15fa00c856e4ffe1ea8fdd7969f30789e6d6f886094c173dbecbbcbea9666bb7
154 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to a link farm designed for SEO manipulation. The primary malicious URL, 'https://ttraff.cc/pify?keyword=business+plan+template+free+download+pdf', is identified as a redirector to malicious infrastructure. The document body, though partially corrupted, suggests a lure related to 'business plan template free download pdf', aligning with the observed link farm behavior.

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=business+plan+template+free+download+pdf
    • http://files.albanytherapeuticridingcenter.com/uploads/1/3/0/7/130776344/3548635.pdf
    • http://files.mixelle91.com/uploads/1/3/1/3/131398234/b27d815609cfa8.pdf
    • http://files.judysflower.com/uploads/1/3/2/7/132712483/nedokufuvuku-rejulagu-wewote-vowekafat.pdf
    • http://files.murderasacalltolove.com/uploads/1/3/2/6/132681307/valojig.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/5930/5880/files/91145763437.pdf
    • https://cdn.shopify.com/s/files/1/0435/7259/2801/files/jokifebigoginujavuxinozaw.pdf
    • https://cdn.shopify.com/s/files/1/0432/4828/7904/files/85134193400.pdf
    • https://cdn.shopify.com/s/files/1/0432/6470/4662/files/8314291395.pdf
    • https://cdn.shopify.com/s/files/1/0430/1602/8309/files/86345473046.pdf
    • https://cdn.shopify.com/s/files/1/0431/6846/5053/files/ranolo.pdf
    • https://cdn.shopify.com/s/files/1/0430/1658/5379/files/25758674534.pdf
    • https://cdn.shopify.com/s/files/1/0429/4085/8527/files/zogelarojudisuruvaz.pdf
    • https://cdn.shopify.com/s/files/1/0434/6108/3301/files/adjektivdeklination_bestimmter_artikel_bungen.pdf
    • https://cdn.shopify.com/s/files/1/0427/5830/8006/files/kvs_biodata_form_for_interview_tgt.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_off00006ca7.bin
0c6b18f420ce4f648280452b3a0b07c386ed88991d5ad4db6b7f6f07e66004a2
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CA7 5328 bytes
font_01_sfnt_off00007ec3.bin
c3c2db20c5edef2959d9590ccaa036379331f2c20e9b0c4fb6ef61fc34c0b331
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EC3 10068 bytes