Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b0b0ec2662f5b17…

MALICIOUS

PDF

35.5 KB Created: 2020-08-10 04:58:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d4c4b0a421b9fa41ead556d80dc6fa9d SHA-1: 799502ba812ca4026e9df611cb64725e1b975639 SHA-256: 2b0b0ec2662f5b1793e6aaaf774c8f187daf49e0e93e27502a622b6098fd9620
128 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link redirects to known malicious infrastructure at ttraff.cc. The document body also contains text suggesting a 'download' lure, which is consistent with the PDF_SEO_LINK_FARM and PDF_MALICIOUS_REDIRECTOR_LINK heuristics. The primary malicious IOC is the redirector URL, which likely serves as a gateway to further malicious content.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=questions+simple+past+tense+exercises+pdf
    • http://wonevu.simplycakesmiami.com/uploads/1/3/1/6/131606289/zemudosepi-wunudinamake-dobipef-ganiwiki.pdf
    • http://files.boobsandgaming.com/uploads/1/3/1/8/131871740/862223.pdf
    • http://files.brightonbandstandweddings.co.uk/uploads/1/3/2/6/132681164/7a64fa1.pdf
    • http://files.krethcattle.com/uploads/1/3/1/0/131070137/miwurejajesaj_sevirepuja.pdf
    • http://files.carolavedonsavage.com/uploads/1/3/0/7/130740217/dedigurat-kosemaguvijisa-nexomerutugupek.pdf
    • https://cdn.shopify.com/s/files/1/0451/1108/3160/files/gungeon_yellow_chamber.pdf
    • https://cdn.shopify.com/s/files/1/0432/2331/8683/files/politik_identitas_dan_multikulturalisme.pdf
    • https://cdn.shopify.com/s/files/1/0434/3670/3900/files/2797251462.pdf
    • https://cdn.shopify.com/s/files/1/0431/1564/3041/files/58154419436.pdf
    • https://cdn.shopify.com/s/files/1/0430/9742/4026/files/nekegunafunutonepuvutora.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/takuz.pdf
    • https://cdn.shopify.com/s/files/1/0435/0253/4822/files/persuasive_writing_samples.pdf
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/52438546462.pdf
    • https://cdn.shopify.com/s/files/1/0433/4462/5822/files/32452510297.pdf
    • https://cdn.shopify.com/s/files/1/0436/0414/8381/files/26919651689.pdf
    • https://cdn.shopify.com/s/files/1/0433/0671/3253/files/tunavawifalaxojifunudi.pdf
    • https://cdn.shopify.com/s/files/1/0447/4375/3877/files/cetosis_diabetica.pdf
    • https://cdn.shopify.com/s/files/1/0435/2815/9396/files/bwv_1052_piano.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/
    • https://cdn.shopify.com

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c38.bin
bb4ad627a498b675dd395f4854abea8c861fb3d9563559cc8c3ffc34ef300391
pdf-font-stream PDF embedded font (sfnt) at offset 0x4C38 5432 bytes
font_01_sfnt_off00005e97.bin
b6080b589d31eff898827c6b2c333acb229e2e1eb008cb44a1ef494679c4b88d
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E97 9948 bytes