Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9de330676709401…

MALICIOUS

PDF

36.6 KB Created: 2020-08-19 05:21:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab83286f953d1219528b474f8fcf595c SHA-1: 2f8042eb5befa0231584842f2525078885f44c68 SHA-256: b9de330676709401f78d0ec44469f32116d646bf1186518981121645eaf0505f
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links, with one critical heuristic identifying it as a malicious redirector. The document body, though partially corrupted, contains the text 'Beef carpaccio nutrition information' and a URL that appears to be a lure. This URL, 'https://ttraff.com/pify?keyword=beef+carpaccio+nutrition+information', redirects to a malicious domain, indicating a phishing or social engineering attack. The presence of many external links, including benign ones on Shopify, suggests an attempt to obscure the malicious intent or to appear as a legitimate content aggregator.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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/pify?keyword=beef+carpaccio+nutrition+information
    • http://files.fremontchemistry.com/uploads/1/3/1/3/131398008/3098876.pdf
    • http://files.theequineadvisor.com/uploads/1/3/1/1/131163737/losokaf-jerapozezux-wiwoditux-xaxate.pdf
    • https://cdn.shopify.com/s/files/1/0433/2670/1726/files/basketball_workouts_for_guards.pdf
    • https://cdn.shopify.com/s/files/1/0430/5921/6537/files/ganobimewari.pdf
    • https://cdn.shopify.com/s/files/1/0433/3489/3718/files/gisejile.pdf
    • https://cdn.shopify.com/s/files/1/0429/8552/1311/files/bohemian_rhapsody_piano_original.pdf
    • https://cdn.shopify.com/s/files/1/0430/2805/4169/files/84584983930.pdf
    • https://cdn.shopify.com/s/files/1/0429/2309/8279/files/1437479456.pdf
    • https://cdn.shopify.com/s/files/1/0431/3333/7768/files/58610332171.pdf
    • https://cdn.shopify.com/s/files/1/0437/3548/2529/files/best_couple_images_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/9754/7157/files/warlord_of_draenor_private_servers.pdf
    • https://cdn.shopify.com/s/files/1/0448/1551/5805/files/jimunewinivajirikopotami.pdf
    • https://cdn.shopify.com/s/files/1/0435/5037/6100/files/lulixomewusunexisu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000045ec.bin
c818c62d3e7e7e822c56bacddff12e509671db61b1566686cda5834529d00568
pdf-font-stream PDF embedded font (sfnt) at offset 0x45EC 4880 bytes
font_01_sfnt_off00005664.bin
08b943816caa4a0e57170028bd57f2eed0e64932305396fc1f07301d69e8601a
pdf-font-stream PDF embedded font (sfnt) at offset 0x5664 9688 bytes
font_02_sfnt_off0000777d.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x777D 4324 bytes