Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c1b7b9fd43aa18d…

MALICIOUS

PDF

60.9 KB Created: 2020-08-08 20:00:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 53249fa7427d8692abda4e381f5bb834 SHA-1: ea70a0cf2cd8bfcc1a461dc4884611053757d8df SHA-256: 5c1b7b9fd43aa18dd36afd6dd12bfb626e234b90294059078e2d09b4d5cbbbc3
154 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a known malicious redirector infrastructure, specifically 'ttraff.com'. The document body, though heavily obfuscated, contains a reference to the same malicious URL. This indicates the primary purpose of the file is to redirect users to malicious content, likely for phishing or scamming purposes.

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=alergia+por+picadura+de+abeja+pdf
    • http://files.crosbyirontonmusic.org/uploads/1/3/0/7/130775364/susepep.pdf
    • http://files.myjourneyoffaithandhealing.com/uploads/1/3/0/9/130969981/3846796.pdf
    • http://ludikuze.weerkids.net/uploads/1/3/0/7/130775403/vunumulapoveli.pdf
    • http://files.whbaptist.org/uploads/1/3/1/4/131406234/mofoxa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0507/4838/files/65498763708.pdf
    • https://cdn.shopify.com/s/files/1/0429/5458/8316/files/41894557593.pdf
    • https://cdn.shopify.com/s/files/1/0434/1180/0220/files/bush_pin_type_coupling.pdf
    • https://cdn.shopify.com/s/files/1/0432/4923/8179/files/feziw.pdf
    • https://cdn.shopify.com/s/files/1/0430/5063/1319/files/27129576703.pdf
    • https://cdn.shopify.com/s/files/1/0434/4925/4050/files/actinomicosis_en_bovinos.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/padazasajanelidazepujum.pdf
    • https://cdn.shopify.com/s/files/1/0430/5541/5445/files/dajabafujovubaxaji.pdf
    • https://cdn.shopify.com/s/files/1/0436/3563/8425/files/landfill_bioreactor_design_and_operation.pdf
    • https://cdn.shopify.com/s/files/1/0433/2548/9320/files/12577631121.pdf
    • https://cdn.shopify.com/s/files/1/0429/7755/8681/files/36092486312.pdf
    • https://cdn.shopify.com/s/files/1/0440/7663/0181/files/rubejimenurulokapalewuv.pdf
    • https://cdn.shopify.com/s/files/1/0435/8553/6159/files/vutupolezaweguregakeb.pdf
    • https://cdn.shopify.com/s/files/1/0431/0266/6906/files/fasisabipusu.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_off0000ab6e.bin
06fff9db39fc2dd063442af145be7a135ce506997604b21fc5d7419d90bcb6bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB6E 5352 bytes
font_01_sfnt_off0000bdb4.bin
b76d5c276cbce82b483a9910b90540298eb7ca2e94997d7e9984dc40e20aa78d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBDB4 11940 bytes

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