Malicious PDF — malware analysis report

Static analysis result for SHA-256 762656f64ca37241…

MALICIOUS

PDF

53.2 KB Created: 2020-08-06 20:59:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c8b3b88f352ffbccd1b5a32ebd1b6fa8 SHA-1: 5e8b830828c3f604d3869cae23ddea34b4da58f6 SHA-256: 762656f64ca372413dca906e6bbd1a8045b06726e679b4037e2de23f58fac704
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that likely serves as the lure. The presence of many external PDF links suggests a link farm or SEO poisoning attempt to distribute malicious content.

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=character+development+pdf
    • http://files.martinhartfilms.com/uploads/1/3/1/4/131437380/c493818.pdf
    • http://files.thephotocopiedhipster.com/uploads/1/3/0/7/130775936/4762693.pdf
    • http://files.womanstouchnj.com/uploads/1/3/1/4/131437677/vivizilopiz-tidofivebulo-retaninov.pdf
    • http://files.heathernormansmith.com/uploads/1/3/0/7/130739452/4187362c95a4966.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0430/3106/8823/files/didagalokisanefe.pdf
    • https://cdn.shopify.com/s/files/1/0435/6990/5825/files/titaxak.pdf
    • https://cdn.shopify.com/s/files/1/0432/1312/7844/files/naruto_shippuden_episode_336_english_dubbed.pdf
    • https://cdn.shopify.com/s/files/1/0436/9448/9755/files/82744431960.pdf
    • https://cdn.shopify.com/s/files/1/0432/2761/1295/files/38876892001.pdf
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/11536862526.pdf
    • https://cdn.shopify.com/s/files/1/0434/1540/4702/files/symmetry_surgical_catalog.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75609531209.pdf
    • https://cdn.shopify.com/s/files/1/0446/0858/5891/files/how_to_know_higher_worlds.pdf
    • https://cdn.shopify.com/s/files/1/0430/6511/4775/files/34323785799.pdf
    • https://cdn.shopify.com/s/files/1/0437/7876/9045/files/jakewepuzo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000085ff.bin
ed8ad35105ed01b42552cc174eed3b649952ac62dc81c61a40ca36507ea2b88e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85FF 5040 bytes
font_01_sfnt_off0000970b.bin
dc4bd41ac4163214fd10f2d9fa4ef76227f6d32ff39a82fa6621cbbbd5bb64fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x970B 10332 bytes
font_02_sfnt_off0000b9db.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB9DB 4324 bytes

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