Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a25c59c51736727…

MALICIOUS

PDF

45.3 KB Created: 2020-08-28 13:37:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c695ac5943a41c49113ec73abf9e5a84 SHA-1: 7fc5903a9329f54497814668e477f25e6ef80521 SHA-256: 6a25c59c51736727890bf8bd565ee25c0499a9ac4295ce8e7739a73ad30c31bf
154 Risk Score

Malware Insights

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

The PDF document contains a link farm, with a primary malicious redirector URL pointing to 'https://ttraff.ru/pify?keyword=aquaponics+farming+business+plan+in+india'. This indicates a phishing or scam attempt, likely using the 'aquaponics farming business plan' lure to entice clicks. The presence of numerous other links, many pointing to Shopify, suggests an attempt to obscure the malicious destination or to appear as a legitimate resource. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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=aquaponics+farming+business+plan+in+india
    • http://files.betuldemirkaya.net/uploads/1/3/1/4/131453436/rajapuxit-sobugugal-tazagu-kigokitafazuvej.pdf
    • http://felironot.foxslowponies.com/uploads/1/3/0/8/130813650/wewapakabokuxalika.pdf
    • http://files.pulj.org/uploads/1/3/1/8/131871849/2fbfc3cc5b7.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/5068/0991/files/97298023014.pdf
    • https://cdn.shopify.com/s/files/1/0463/0845/8661/files/27359476505.pdf
    • https://cdn.shopify.com/s/files/1/0440/7217/3733/files/encyclopedia_judaica_vol_10.pdf
    • https://cdn.shopify.com/s/files/1/0432/6011/7160/files/58167709829.pdf
    • https://cdn.shopify.com/s/files/1/0429/4128/4518/files/android_studio_emulator_black_screen.pdf
    • https://cdn.shopify.com/s/files/1/0439/7475/4462/files/jusiranoxilunudoku.pdf
    • https://cdn.shopify.com/s/files/1/0434/2883/9586/files/logistics_company_profile_sample.pdf
    • https://cdn.shopify.com/s/files/1/0434/4378/1792/files/virulufufuwetozibukiwo.pdf
    • https://cdn.shopify.com/s/files/1/0432/9065/6924/files/37265883327.pdf
    • https://cdn.shopify.com/s/files/1/0461/9665/4231/files/tuwelidamelivajulejij.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/50751207741.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wudivilijekeroleve.pdf
    • https://cdn.shopify.com/s/files/1/0431/9304/1059/files/kugirizutotagelotarowifo.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1637/files/california_appellate_court_second_district_case_information.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_off000070ae.bin
c5bacdfdf4d87643c7f41954f300c82ebf3b90f7bc2f76aae3433c523b25303a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70AE 5732 bytes
font_01_sfnt_off000083ff.bin
be2f31354265fadb1a6551e0e05e25b5966e4078766ac1628085f44be6e54c82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83FF 10452 bytes

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