Malicious PDF — malware analysis report

Static analysis result for SHA-256 75560a3ddf4e5b65…

MALICIOUS

PDF

55.1 KB Created: 2020-08-19 22:04:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c310ad5607786a9054ce9e7030f4853 SHA-1: 20e5061039eb43b4aa013ce77cf76b753f7c0ca1 SHA-256: 75560a3ddf4e5b65049df2f535b71262e2a14f5b7a32ec7539731d5784a55dd5
154 Risk Score

Malware Insights

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

The PDF contains embedded links, with one specifically identified as a malicious redirector pointing to 'https://ttraff.ru/pify?keyword=god+of+war+3+hidden+trophy+guide'. The document body, though heavily obfuscated, contains text related to 'God of war 3 hidden trophy guide', suggesting a lure to entice users to click the malicious link. The presence of numerous other PDF links, many pointing to Shopify, indicates a potential link farm or SEO manipulation tactic 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.ru/pify?keyword=god+of+war+3+hidden+trophy+guide
    • http://files.kentishdyes.co.uk/uploads/1/3/1/4/131452949/356f582.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0432/3350/9535/files/ankush_lamba_100_puzzle_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/2891/3055/files/irritable_bowel_syndrome_treatment_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0434/6806/2872/files/5591142583.pdf
    • https://cdn.shopify.com/s/files/1/0438/8680/5147/files/gunotasototo.pdf
    • https://cdn.shopify.com/s/files/1/0439/4654/1211/files/xusufakelirizulojexet.pdf
    • https://cdn.shopify.com/s/files/1/0429/6402/5493/files/76873426295.pdf
    • https://cdn.shopify.com/s/files/1/0438/1310/9917/files/weighted_calisthenics_routine.pdf
    • https://cdn.shopify.com/s/files/1/0434/1219/3438/files/chopper_one_piece_forms.pdf
    • https://cdn.shopify.com/s/files/1/0429/8424/3351/files/75139210334.pdf
    • https://cdn.shopify.com/s/files/1/0431/7780/3931/files/72945298837.pdf
    • https://cdn.shopify.com/s/files/1/0433/1274/2550/files/82562328260.pdf
    • https://cdn.shopify.com/s/files/1/0441/2270/1976/files/fopulikolozijesovijepova.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_off00008b7e.bin
d40f7cb88641709c5253dd181b60c139aa43e54e06bfc546be25eb8d36b8dfa2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B7E 5364 bytes
font_01_sfnt_off00009dda.bin
fe51a0a291543704da122428249c03c224bb523b5d54301ca62b922097570cf2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DDA 10420 bytes
font_02_sfnt_off0000c0cc.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC0CC 4324 bytes

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