Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4d1f0473c395394…

MALICIOUS

PDF

55.0 KB Created: 2020-09-04 18:47:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e130c8bb8e8a81fd10435adebc155a45 SHA-1: 6f214f49cdcc6eff3566224923468669bf996a56 SHA-256: c4d1f0473c3953940b9174a25ab0e9713fadeaf9e29e56c39ecedd6dc9d2347a
162 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link and a PDF link farm, indicating a lure to external content. The document body, though heavily obfuscated, contains a URL that matches the redirector link found in the heuristics. This suggests the document is designed to trick users into clicking malicious links, likely for phishing or malware distribution, fitting an advance-fee scam pretext.

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.
  • 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.
  • 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.link/wix?keyword=hey+soul+sister+audio+song
    • https://cdn.shopify.com/s/files/1/0435/4703/3752/files/9842542381.pdf
    • https://cdn.shopify.com/s/files/1/0431/6551/5933/files/la_escuela_de_la_ignorancia.pdf
    • https://cdn.shopify.com/s/files/1/0437/6631/7205/files/descent_quest_guide.pdf
    • https://cdn.shopify.com/s/files/1/0435/8481/5259/files/penogo.pdf
    • https://cdn.shopify.com/s/files/1/0433/4436/3678/files/nusasati.pdf
    • https://cdn.shopify.com/s/files/1/0432/9252/4702/files/46338564682.pdf
    • https://cdn.shopify.com/s/files/1/0465/3534/4287/files/artifactory_artifacts_jenkins.pdf
    • https://cdn.shopify.com/s/files/1/0433/4593/6535/files/bluestacks_ios_for_pc.pdf
    • https://cdn.shopify.com/s/files/1/0429/0304/4263/files/dead_letter_queue_in_mq.pdf
    • https://cdn.shopify.com/s/files/1/0434/0776/9752/files/jivew.pdf
    • https://static.usrfiles.com/ugd/ea9bdf_0b426ed12ff04f97a9b6495385d565e0.pdf
    • https://static.usrfiles.com/ugd/144d27_b9d0c75740b7464abc0b79091ee75029.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_off00009186.bin
f216adc23a15b2fa839d0e0067940f2554c81c45796edd80eacc781532634caa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9186 5056 bytes
font_01_sfnt_off0000a2cb.bin
c8d9137891a7ae1367d4bfa62c85bcbbbb385907ad905074e7622c0d00bd5120		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA2CB 14184 bytes

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