Malicious PDF — malware analysis report

Static analysis result for SHA-256 506c2fd4aa78bf9c…

MALICIOUS

PDF

46.1 KB Created: 2020-08-07 08:40:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a9a8600d05467906b4208335f1837b37 SHA-1: 19970e8032d503956a2edf038bee721e0bb1280f SHA-256: 506c2fd4aa78bf9ca0b20702ed5cdd5c6eadb8f44522361b84c7ae165798acc8
150 Risk Score

Malware Insights

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

The PDF was flagged as malicious by ML classifiers and heuristics indicating it contains a link to a known malicious redirector. Additionally, it features a large number of external links, many pointing to Shopify domains, suggesting an attempt to manipulate search engine results or distribute content through a seemingly benign platform. The document body contains garbled text and a URL that appears to be the primary malicious redirector.

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.cc/pify?keyword=latex+times+new+roman+font+pdflatex
    • http://files.50plusstickingtogether.com/uploads/1/3/1/4/131452938/498ca.pdf
    • http://files.victoriabaker.net/uploads/1/3/1/4/131406800/kadojib.pdf
    • http://tilikob.destinationsananselmo.com/uploads/1/3/1/4/131407995/210105.pdf
    • https://cdn.shopify.com/s/files/1/0433/6464/7077/files/sales_and_marketing_cv.pdf
    • https://cdn.shopify.com/s/files/1/0428/0470/7491/files/30522553228.pdf
    • https://cdn.shopify.com/s/files/1/0428/1712/6567/files/fixogotugove.pdf
    • https://cdn.shopify.com/s/files/1/0432/3550/8381/files/42116482327.pdf
    • https://cdn.shopify.com/s/files/1/0430/2045/1997/files/cessna_421c_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/2376/0536/files/wokejikunumenimes.pdf
    • https://cdn.shopify.com/s/files/1/0427/7311/9143/files/95657520840.pdf
    • https://cdn.shopify.com/s/files/1/0427/4287/4278/files/gededuruniseserivuxutato.pdf
    • https://cdn.shopify.com/s/files/1/0429/7129/9999/files/bogitumege.pdf
    • https://cdn.shopify.com/s/files/1/0434/3080/5669/files/65408878800.pdf
    • https://cdn.shopify.com/s/files/1/0431/6587/6379/files/49037379797.pdf
    • https://cdn.shopify.com/s/files/1/0430/8510/3258/files/wafusumodinipipep.pdf
    • https://cdn.shopify.com/s/files/1/0433/5842/1142/files/cognitive_biases_codex.pdf
    • https://cdn.shopify.com/s/files/1/0447/9392/1685/files/one_touch_ultra_manual.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/s/files

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000686b.bin
38adf11ecc9cc109a61e9a10863c61c73e786f71f3e3715da02a54f97a14c4b3
pdf-font-stream PDF embedded font (sfnt) at offset 0x686B 5076 bytes
font_01_sfnt_off000079ad.bin
10e6083ad8bdbaee23ab9e4c73b8448e09e919e8ae98830f20e0382ea269a5ae
pdf-font-stream PDF embedded font (sfnt) at offset 0x79AD 10176 bytes
font_02_sfnt_off00009c86.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x9C86 4324 bytes