Malicious PDF — malware analysis report

Static analysis result for SHA-256 188fc63bdd078e55…

MALICIOUS

PDF

175.8 KB Created: 2020-08-23 03:50:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 21f8eb3cc8fcaa5fc03d530b022fcd20 SHA-1: 58175a1dc59edcc24d3ff59ddbb037aabfed192a SHA-256: 188fc63bdd078e553325e3b424fbdb3151e097a75e2fc1ce05ab71b5f29d3750
142 Risk Score

Malware Insights

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

This PDF document contains lures indicative of an advance-fee scam, including urgency ('account will be terminated') and prize language. It embeds a link to a known malicious redirector, 'https://ttraff.ru/pify?keyword=horizontal+scroll+menu+android', which likely serves as the initial step in a phishing or malware delivery chain. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=horizontal+scroll+menu+android
    • http://mezapog.wilmiepaguntalan.com/uploads/1/3/1/6/131636664/7469583.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/1751/8751/files/dl_937_form.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pegegezanonipilupe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/gawow.pdf
    • https://cdn.shopify.com/s/files/1/0433/8486/4917/files/magominerelujeraxuteravax.pdf
    • https://cdn.shopify.com/s/files/1/0427/7328/2983/files/poxuwutijep.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51982080438.pdf
    • https://cdn.shopify.com/s/files/1/0429/8797/8905/files/how_to_write_a_character_witness_statement.pdf
    • https://cdn.shopify.com/s/files/1/0449/5143/7480/files/strength_training_without_weights.pdf
    • https://cdn.shopify.com/s/files/1/0430/2009/1555/files/comment_avoir_confiance_en_soi.pdf
    • https://cdn.shopify.com/s/files/1/0430/7098/0247/files/fiwokuvofujab.pdf
    • https://cdn.shopify.com/s/files/1/0429/7709/9935/files/harvard_style_referencing_document.pdf
    • https://cdn.shopify.com/s/files/1/0434/4732/0728/files/nefuzidizanikumu.pdf
    • https://cdn.shopify.com/s/files/1/0429/5553/8591/files/joint_commission_international_accreditation.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_off00027340.bin
7a4ea2fd98d208d3b0abf015a151c0c8c336ae99759abb47c4d5a2e478501c92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27340 5096 bytes
font_01_sfnt_off00028473.bin
899b059eb0a9daff0a5864b3792befca2542b253c00a83c517809bf2acb7152e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28473 13752 bytes

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