Malicious PDF — malware analysis report

Static analysis result for SHA-256 5694af08abe1971a…

MALICIOUS

PDF

45.1 KB Created: 2020-08-04 13:15:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a2b53e4099922bb4d901c39dfe682d25 SHA-1: dabc16f4978b80ccedeca5af825e31a0e4c27dd6 SHA-256: 5694af08abe1971a46aefd81dabfa245363f075882a3b58598dec4970d5ba95c
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The ML classifier also strongly indicated maliciousness. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to a phishing or malware distribution site.

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=action+research+pdf+in+english
    • http://files.shakespeareonclark.com/uploads/1/3/1/3/131379650/tonetagididizi.pdf
    • http://files.alfaknife.com/uploads/1/3/0/7/130775197/xipupepopus.pdf
    • http://files.myececlass-safety.com/uploads/1/3/2/7/132740339/lubamifogibuxovawo.pdf
    • https://cdn.shopify.com/s/files/1/0434/6337/7048/files/8363776512.pdf
    • https://cdn.shopify.com/s/files/1/0437/3191/0810/files/webmail_vita_virginia_gov_login.pdf
    • https://cdn.shopify.com/s/files/1/0430/2703/8369/files/74911721479.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/voxetevew.pdf
    • https://cdn.shopify.com/s/files/1/0431/2609/6036/files/lewolozemofabozikor.pdf
    • https://cdn.shopify.com/s/files/1/0434/8307/0630/files/how_to_remove_a_group_from_facebook.pdf
    • https://cdn.shopify.com/s/files/1/0440/3052/5590/files/nomenclatura_dos_alcanos_ramificados.pdf
    • https://cdn.shopify.com/s/files/1/0437/1880/3605/files/sojuxufunufetetovofe.pdf
    • https://cdn.shopify.com/s/files/1/0430/7868/0730/files/85845658332.pdf
    • https://cdn.shopify.com/s/files/1/0440/0077/2246/files/24946842698.pdf
    • https://cdn.shopify.com/s/files/1/0432/9360/6046/files/dakuvujojatedurowe.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/riemann_sums_calculator.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_off000069ac.bin
9a98723dae936e7c7c8d502cfbcf27bf9f93cff28ba6a06675a6a95244fbc4de
pdf-font-stream PDF embedded font (sfnt) at offset 0x69AC 1696 bytes
font_01_sfnt_off000071d6.bin
d2081c1674f68ee086a239f5b2c8e799b0d21f9df5a3dc00ea19c190ba44c959
pdf-font-stream PDF embedded font (sfnt) at offset 0x71D6 5408 bytes
font_02_sfnt_off0000843a.bin
3307669412367a22f1e74a9652aa80ea04cb16e1c4609c323a1524be93e5c5b6
pdf-font-stream PDF embedded font (sfnt) at offset 0x843A 10192 bytes