Malicious PDF — malware analysis report

Static analysis result for SHA-256 8629aa847d6ea788…

MALICIOUS

PDF

50.6 KB Created: 2020-06-17 11:44:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dfe47459dabd06758ab2d21c865e8c04 SHA-1: 4b6dd2808ed38bce408fee58eba15e3cb03c50ea SHA-256: 8629aa847d6ea7881a9529fcbb4bdb36dbe3208afa48081c435a60113c532138
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document was flagged by a machine learning classifier with high confidence. It contains a large number of external links, characteristic of a link farm or SEO poisoning attack, designed to lure users to potentially malicious websites. The document body is heavily obfuscated and contains embedded URLs that point to various domains, suggesting a broad distribution effort.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://xathletics.org/uploads/1/3/1/6/131606864/131606864.html#deepshine+color+guide
    • http://ilmcorporation.com/uploads/1/3/0/4/130476143/tofojekuba_wenasefoxino_vadanasizite_dejevosabedopan.pdf
    • http://yourimmobile.de/uploads/1/3/0/6/130620957/5248184.pdf
    • http://cpanel.mindfulevolution.net/uploads/1/3/0/6/130603803/nimofuregewijulime.pdf
    • http://autodiscover.adsongsjingles.com/uploads/1/3/1/4/131455734/zewuvijomi_nowesutofubo_suleva_zakagekob.pdf
    • http://74-123-79-170.mgwnet.com/uploads/1/3/1/6/131606065/kunibakogefasizori.pdf
    • http://delindalmccann.com/uploads/1/3/1/3/131380184/porupotoxor.pdf
    • http://stmarysym.org/uploads/1/3/1/3/131384244/kosez_xopijemefi_bapojuxog.pdf
    • http://hamiltonenterprisespep.com/uploads/1/3/0/3/130323996/metesun.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008a91.bin
6d172d5bf3fa1a0b828e9a49d9f20f8b5547c1a389a0c0c2d11b8dd0f2153258		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A91 4928 bytes
font_01_sfnt_off00009b3b.bin
ef2c4b403f71f4dbb63e14794470684d567a63b0ac3099e4a704c4da14cbdaba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B3B 10460 bytes

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