Malicious PDF — malware analysis report

Static analysis result for SHA-256 1572b322f94104ba…

MALICIOUS

PDF

47.9 KB Created: 2020-08-05 06:40:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3dd5ca6ea70a1ee35359575ba129bd91 SHA-1: 707232bd7b7484297f8bdcf702fadb7a689402ff SHA-256: 1572b322f94104bac3b3aada7600680c5fab573195396427d10090f1f523d193
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=treatment+of+arrhythmias+pdf', suggesting a lure to a malicious site disguised as a document. The presence of a malicious redirector and the ML classifier's high confidence indicate a high likelihood of malicious intent.

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=treatment+of+arrhythmias+pdf
    • http://files.buffyisdog.blog/uploads/1/3/1/4/131410545/3298827.pdf
    • http://files.redwordediting.com/uploads/1/3/0/9/130969761/e79f3e1352b9.pdf
    • http://files.ronrash.com/uploads/1/3/1/6/131637362/zupumibakoxes.pdf
    • http://files.singsingprisonmuseum.org/uploads/1/3/2/7/132740337/01c41faef8ce.pdf
    • http://files.wellsburgchamber.com/uploads/1/3/0/9/130969428/sanor_majafiwe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/3966/1981/files/93264238824.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2089/files/how_to_view_source_code_on_mac.pdf
    • https://cdn.shopify.com/s/files/1/0430/4715/7911/files/nevevipid.pdf
    • https://cdn.shopify.com/s/files/1/0431/6866/1670/files/zalipigijegejadijafeta.pdf
    • https://cdn.shopify.com/s/files/1/0438/1710/7616/files/50360458203.pdf
    • https://cdn.shopify.com/s/files/1/0435/7026/6273/files/vanapidali.pdf
    • https://cdn.shopify.com/s/files/1/0434/1334/0312/files/netikesakafinorejejefoj.pdf
    • https://cdn.shopify.com/s/files/1/0430/7091/4717/files/sinezisevagetigajifuwu.pdf
    • https://cdn.shopify.com/s/files/1/0433/6710/4668/files/digise.pdf
    • https://cdn.shopify.com/s/files/1/0432/5372/7394/files/votajevonatatif.pdf
    • https://cdn.shopify.com/s/files/1/0435/4116/8283/files/92686376234.pdf
    • https://cdn.shopify.com/s/files/1/0429/3971/1655/files/50777787178.pdf
    • https://medlineplus.gov/arrhythmia.html
    • 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_off00007ea0.bin
e9c58fcfa6e7cfb9275e0e4b8ccc3f86f4dda7b78b0ca98be904fa0bc4e88bd6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EA0 5300 bytes
font_01_sfnt_off00009087.bin
f9a32744966119215bf1fe71eba7116446c97ca2e4d1056c342be1518d4b5fb0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9087 10076 bytes

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