Malicious PDF — malware analysis report

Static analysis result for SHA-256 184ae203cd1e847e…

MALICIOUS

PDF

44.7 KB Created: 2020-08-14 08:06:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52123a42992a16a5a73c456910d17eb9 SHA-1: 2cb6806c4a9e975e37a769e1a4d050e1d5df1ccf SHA-256: 184ae203cd1e847e0efeeaff099e695c879567544df80850d7a8c8201c7398ff
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains embedded links designed to redirect users to malicious infrastructure, as indicated by the 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' heuristics. The document body, though heavily obfuscated, contains text suggesting an invoice or payment listing, aligning with the 'SE_INVOICE_LURE' finding. The primary malicious URL identified is https://ttraff.cc/pify?keyword=ahsa+participating+funds+information+listing, which likely serves as a redirector to a final payload.

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.
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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.cc/pify?keyword=ahsa+participating+funds+information+listing
    • http://files.yellowgroup2.com/uploads/1/3/2/7/132740905/ab11cca.pdf
    • http://files.finessegarments.com/uploads/1/3/1/1/131164520/xariwubix.pdf
    • http://files.bodkacoffee.com/uploads/1/3/2/8/132815181/7347096.pdf
    • http://files.bananatreeroots.com/uploads/1/3/0/8/130873781/gefapubele.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0440/1607/4902/files/zoputibetodi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1656/0550/files/kurezudixunosutikovelow.pdf
    • https://cdn.shopify.com/s/files/1/0431/0587/8170/files/rulugorupemiritetago.pdf
    • https://cdn.shopify.com/s/files/1/0432/5690/5885/files/pugedipubogakagal.pdf
    • https://cdn.shopify.com/s/files/1/0436/4759/8742/files/fatinagezativajoxab.pdf
    • https://cdn.shopify.com/s/files/1/0432/0716/4064/files/gananifogaxifojolimi.pdf
    • https://cdn.shopify.com/s/files/1/0450/6628/9302/files/headway_academic_skills_reading_writing_and_study_skills.pdf
    • https://cdn.shopify.com/s/files/1/0447/8477/9430/files/zinosaxefizuwuzami.pdf
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/atto_di_dolore_preghiera.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80884551140.pdf
    • https://cdn.shopify.com/s/files/1/0438/2133/4688/files/xudofelofawog.pdf
    • https://cdn.shopify.com/s/files/1/0432/7643/5621/files/kuzovegafikisul.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_off0000708c.bin
c2642d9fea113027f69890bb080a6ad011be2f9b7714b3db877191d88e290def		 pdf-font-stream PDF embedded font (sfnt) at offset 0x708C 5556 bytes
font_01_sfnt_off0000833c.bin
28422706a51d9a8fafe55a350b17b6ffc1d73460e1f85b74bdd7b9fc8112b0e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x833C 9932 bytes

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