Malicious PDF — malware analysis report

Static analysis result for SHA-256 024d4bb3ae1e8ebc…

MALICIOUS

PDF

56.3 KB Created: 2020-08-09 22:48:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ec581169ff3c83af70f0c2b3c3ce9109 SHA-1: ffc70704d56f450c48f13da05bcf297acc79637f SHA-256: 024d4bb3ae1e8ebc3bef067178aae93173f0fd0826e249cd6a6cb823addc0202
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to Shopify domains but are likely part of a link farm. The primary malicious indicator is a link to 'ttraff.cc', identified as a malicious redirector. This suggests the document's purpose is to direct users to malicious infrastructure, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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=derive+joint+cdf+from+joint+pdf
    • http://files.thebioedge.com/uploads/1/3/1/4/131453247/sosimetenaserasozoga.pdf
    • http://files.johnsongardencenter.net/uploads/1/3/1/4/131483662/cf34d1.pdf
    • http://files.4th.mrslambsroom.com/uploads/1/3/1/3/131397938/32fc2b939599.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/4287/3249/files/wujebowabejimozinobetale.pdf
    • https://cdn.shopify.com/s/files/1/0434/4119/3110/files/fujavexogomof.pdf
    • https://cdn.shopify.com/s/files/1/0437/8856/6677/files/6627019694.pdf
    • https://cdn.shopify.com/s/files/1/0430/3034/7938/files/gukogowu.pdf
    • https://cdn.shopify.com/s/files/1/0433/2116/3941/files/novinenenak.pdf
    • https://cdn.shopify.com/s/files/1/0435/8832/1437/files/arduino_uno_pin_description.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/7868051279.pdf
    • https://cdn.shopify.com/s/files/1/0432/8266/1526/files/dozufidusifozifa.pdf
    • https://cdn.shopify.com/s/files/1/0433/9017/3349/files/kuditoresawodekulupelotob.pdf
    • https://cdn.shopify.com/s/files/1/0430/0279/0039/files/pafexelawibidaron.pdf
    • https://cdn.shopify.com/s/files/1/0439/1701/7256/files/53281774776.pdf
    • https://cdn.shopify.com/s/files/1/0429/7054/6335/files/21538092630.pdf
    • https://cdn.shopify.com/s/files/1/0434/2425/2055/files/polar_and_cartesian_coordinates.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007f92.bin
aa84181e566ea039d4b3824b13057b87cd0a1799fa4c84ee0078488ce8833670		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F92 5016 bytes
font_01_sfnt_off000090a6.bin
85ecfdfbcfec321215a3895a1c831b3f982327b9bea8e47f7c55d30b044c30ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90A6 14500 bytes
font_02_sfnt_off0000be8d.bin
f2f4e0122114c1816daa51f7260f1c888ba214d5879cb99462a3968212a29bdb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBE8D 16268 bytes

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