Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d6eda9cfea06dd3…

MALICIOUS

PDF

57.0 KB Created: 2020-08-21 11:02:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5416b33c361bbc0a4996a238ec3da1a7 SHA-1: a87a36a417314904ecc9878f8a9919343c55ce04 SHA-256: 7d6eda9cfea06dd3c04160534576b6909991ebde1fbab5ad83a286851bd00f25
154 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for a 'Reliance annual report 2019 pdf'. The presence of a link farm and a critical heuristic firing for malicious redirector links strongly suggests an attempt to direct users to harmful content. No scripts were extracted, but the PDF structure itself facilitates the attack.

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.ru/pify?keyword=reliance+annual+report+2019+pdf
    • http://files.theoutbackpark.com/uploads/1/3/0/8/130874295/eed4b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0427/6027/4087/files/evolutionary_computation_with_biogeography_based_optimization.pdf
    • https://cdn.shopify.com/s/files/1/0433/6877/5841/files/niladifasebuwaligaforafed.pdf
    • https://cdn.shopify.com/s/files/1/0431/9540/0356/files/jamivekukilavutilaruna.pdf
    • https://cdn.shopify.com/s/files/1/0436/8711/6965/files/zadidalexebimoziremew.pdf
    • https://cdn.shopify.com/s/files/1/0428/1758/5308/files/84353706987.pdf
    • https://cdn.shopify.com/s/files/1/0429/3538/6265/files/animated_svg_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/3038/0698/files/fraction_in_simplest_form_calculator_soup.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/24574924126.pdf
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/occupational_therapy_toolkit_download.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000736a.bin
025261ebb3090ad4a91ba9b6fe99904a62327dc22317cc843eb0b96f5b123a92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x736A 5344 bytes
font_01_sfnt_off000085a0.bin
a75d69887c268dae8d371cd71724f574c818b4e273e538db58934ee0968e9e55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85A0 14860 bytes
font_02_sfnt_off0000b423.bin
c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB423 16164 bytes
font_03_sfnt_off0000c938.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC938 4324 bytes

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