Malicious PDF — malware analysis report

Static analysis result for SHA-256 792d383052462f21…

MALICIOUS

PDF

38.5 KB Created: 2020-07-28 17:48:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 875c79b7d2b40535363c745b9eeadb7e SHA-1: f2625daf3cc251df0788d767bbc3881d30783a73 SHA-256: 792d383052462f21b70bc6ab6bf94f8b7bd78482c31fcec67660f57fcbd3316a
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links directs to a known malicious redirector. The document body, though heavily obfuscated, appears to be a lure related to movie content, suggesting a phishing or malware distribution attempt. No scripts were extracted, but the presence of numerous malicious links indicates a high likelihood of user redirection to harmful sites.

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=bengal+tiger+telugu+movie+tamil+dubbed
    • http://files.rathfrilandmotorclub.co.uk/uploads/1/3/2/3/132302913/zomawuzivoludi_petusol_mufawukemur_xitedelufukojob.pdf
    • http://files.movie-season.com/uploads/1/3/2/7/132740485/4899676.pdf
    • http://files.shisko.com/uploads/1/3/0/7/130776088/f0c26b5235.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/7797/5717/files/beduroven.pdf
    • https://cdn.shopify.com/s/files/1/0434/2022/1607/files/rejatoxokebu.pdf
    • https://cdn.shopify.com/s/files/1/0432/3295/2477/files/manotaginejugigi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5987/9841/files/45976316029.pdf
    • https://cdn.shopify.com/s/files/1/0429/6402/5493/files/jojejugasenofewejiwiwe.pdf
    • https://cdn.shopify.com/s/files/1/0433/8260/3927/files/nuxefefutepaxerovasan.pdf
    • https://cdn.shopify.com/s/files/1/0436/1283/1907/files/11251998405.pdf
    • https://cdn.shopify.com/s/files/1/0433/9567/8357/files/11298082076.pdf
    • https://cdn.shopify.com/s/files/1/0433/5727/4270/files/51450363137.pdf
    • https://cdn.shopify.com/s/files/1/0430/7818/9205/files/11168792894.pdf
    • https://cdn.shopify.com/s/files/1/0437/0094/5048/files/pazepesukavov.pdf
    • https://cdn.shopify.com/s/files/1/0440/7630/2486/files/52513907219.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_off000058b2.bin
2c46acd9a30deaa92d81e929d601d45b14cea7e5d8008cb3272abc37022733af
pdf-font-stream PDF embedded font (sfnt) at offset 0x58B2 5096 bytes
font_01_sfnt_off000069f0.bin
ae7468b7dbf56afe76b2e2893ab798d80751a5495bc5505aef097bf4fc6a02c0
pdf-font-stream PDF embedded font (sfnt) at offset 0x69F0 10284 bytes