Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0ed69be76156981…

MALICIOUS

PDF

99.4 KB Created: 2020-08-09 00:02:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e1a62beb6f690949c479101c63dc4582 SHA-1: fdcdb817742f28136e9f02c34383b28c8a7060bd SHA-256: d0ed69be76156981edeb2ed1af8e40fb6caaa83516ff517479ade465aad8aa09
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=agamennone+tragedia+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs hosted on domains like cdn.shopify.com. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the malicious URL, suggesting a lure to a malicious site.

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=agamennone+tragedia+pdf
    • http://files.pickleballthornbury.com/uploads/1/3/1/4/131453124/suvupenozubopiremek.pdf
    • http://files.whitegallowaysofwayby.com/uploads/1/3/0/8/130873907/fewubogukobavel-sixomolimu-mifip.pdf
    • http://siremogum.greengeckopublishing.com/uploads/1/3/1/6/131607163/9070270.pdf
    • http://files.miriamruberlartist.com/uploads/1/3/1/4/131483019/828517e6fc26dc2.pdf
    • http://files.pestboyz.com/uploads/1/3/1/4/131409574/2710160.pdf
    • https://cdn.shopify.com/s/files/1/0431/3258/4098/files/jugijagisaweg.pdf
    • https://cdn.shopify.com/s/files/1/0436/6965/1609/files/xununakunumomamebiru.pdf
    • https://cdn.shopify.com/s/files/1/0433/3063/3881/files/mario_combat_unblocked.pdf
    • https://cdn.shopify.com/s/files/1/0436/4887/6697/files/biblia_septuaginta_descargar.pdf
    • https://cdn.shopify.com/s/files/1/0445/8138/8452/files/fantasy_football_2013_cheat_sheet_ppr_league.pdf
    • https://cdn.shopify.com/s/files/1/0434/6439/2866/files/68750516936.pdf
    • https://cdn.shopify.com/s/files/1/0435/8694/5187/files/xirotevuzamexaguxo.pdf
    • https://cdn.shopify.com/s/files/1/0432/5661/0969/files/reading_comprehension_past_simple_irregular_verbs.pdf
    • https://cdn.shopify.com/s/files/1/0430/6409/8970/files/lijodugovenedowim.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/86526592296.pdf
    • https://cdn.shopify.com/s/files/1/0437/1618/2166/files/pujupufekugevivejefev.pdf
    • https://cdn.shopify.com/s/files/1/0428/7420/8415/files/58391746240.pdf
    • https://cdn.shopify.com/s/files/1/0431/2491/6388/files/toxowadabijidutubu.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_off00014a69.bin
74f3c38791a82105edab1dbb7f9cd47a5c4703e01956a3acfa6963be30743474		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14A69 5140 bytes
font_01_sfnt_off00015bd6.bin
a2fe7ab2f3c2c31c102d1934aca9c4dfaacbfab4040fcf54113025a8795eab6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15BD6 11340 bytes

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