Malicious PDF — malware analysis report

Static analysis result for SHA-256 698ed768870af21a…

MALICIOUS

PDF

53.4 KB Created: 2020-08-30 06:45:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8aaa1512a034508a392dca5b8c631470 SHA-1: 09162ea16eaf23f47ff2bd91a8f7196ed6a20d58 SHA-256: 698ed768870af21aadeed93cf3dbcff25ed7d82339c95696617b013f3a0ce3e7
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is part of an advance-fee scam lure. The document body and embedded links suggest the intent is to trick the user into clicking malicious URLs, likely leading to further compromise or fraud. The presence of numerous PDF links, many pointing to benign Shopify URLs, indicates a link farm strategy to obscure the malicious redirector.

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.
  • 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.
  • 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.com/wix?keyword=casio+aq-s800w+battery+replacement
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/8015/5289/files/65588046881.pdf
    • https://cdn.shopify.com/s/files/1/0460/7885/3284/files/xaxobakafiregifozigi.pdf
    • https://cdn.shopify.com/s/files/1/0432/3157/6226/files/candy_terry_southern_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/0482/8580/files/yoga_poses_chart.pdf
    • https://cdn.shopify.com/s/files/1/0433/0124/0985/files/pdf_omzetten_naar_word_macbook_air.pdf
    • https://cdn.shopify.com/s/files/1/0429/5039/4019/files/madesad.pdf
    • https://cdn.shopify.com/s/files/1/0430/7537/1159/files/super_mechs_game_guide.pdf
    • https://cdn.shopify.com/s/files/1/0437/3915/2535/files/42526068969.pdf
    • https://static.usrfiles.com/ugd/b8c837_c5576bb4e82e473a9abac39e90c939a7.pdf
    • https://static.usrfiles.com/ugd/b8c837_b508ac2e86d046f5b0078f3fef4526a2.pdf
    • https://static.usrfiles.com/ugd/b8c837_bb28072733b24862b11105ec8d3431bb.pdf
    • https://static.usrfiles.com/ugd/b65acf_ec925a3244e14b6596b8c956ca098342.pdf
    • https://static.usrfiles.com/ugd/162fe6_9a0d1159fd0c432faad0536d45466575.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_off00007fcd.bin
c6aa75e5667f976c39dfa27e5226c136c8bf72df084f9838f792cabb405ed329		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FCD 5812 bytes
font_01_sfnt_off00009396.bin
a6d853875904fa2e2c069339767a9986177d398c587893262e4e2c13b37708f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9396 16820 bytes

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