Malicious PDF — malware analysis report

Static analysis result for SHA-256 c43972c9fe73310f…

MALICIOUS

PDF

49.7 KB Created: 2020-08-25 14:53:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5512b23d7d99de62382ca6862c8818c9 SHA-1: 66978d3b694107581164493705773d62f08695c8 SHA-256: c43972c9fe73310f36dbdf3914b44258f77a70458558953a37c84bced510103a
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to external PDFs, suggesting a link farm or SEO poisoning attempt. One critical heuristic identified a link to a known malicious redirector, 'https://ttraff.cc/pify?keyword=anti-+discrimination+law+philippines+pdf', which is the primary indicator of malicious intent. The document body, though heavily obfuscated, contains this same URL, reinforcing its role in the attack. No scripts were extracted from this sample.

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=anti-+discrimination+law+philippines+pdf
    • http://files.angelicaatelier.com/uploads/1/3/1/6/131606487/xiloxozidedewex.pdf
    • http://files.kingscartelgear.com/uploads/1/3/0/8/130874175/favemuluwojevigamab.pdf
    • http://vupeke.seattlepregnancymassage.com/uploads/1/3/0/7/130776485/377411.pdf
    • http://lebanif.artpetch.com/uploads/1/3/0/8/130814238/sinuwej_rumusemudegil_xetefezowafas.pdf
    • http://files.4hsummercamp.com/uploads/1/3/1/3/131398022/fafudazok.pdf
    • https://cdn.shopify.com/s/files/1/0432/4104/6171/files/85445693677.pdf
    • https://cdn.shopify.com/s/files/1/0431/4352/8609/files/pumepum.pdf
    • https://cdn.shopify.com/s/files/1/0436/9832/3609/files/vurukajezofowojopadadon.pdf
    • https://cdn.shopify.com/s/files/1/0429/8738/9087/files/tegusiragaledunajebori.pdf
    • https://cdn.shopify.com/s/files/1/0431/7220/0608/files/53909820991.pdf
    • https://cdn.shopify.com/s/files/1/0432/1257/0787/files/vitewofosufunekonepovoki.pdf
    • https://cdn.shopify.com/s/files/1/0440/5110/3894/files/lipejarutomojarebubidime.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45484104345.pdf
    • https://cdn.shopify.com/s/files/1/0436/3331/1904/files/69459761434.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/25950481517.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_off00007294.bin
332718641099c206984321377492bb9effa8fd3ae9e55c984cf188dc9c5d06e5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7294 5508 bytes
font_01_sfnt_off00008532.bin
2901076357b551b101646959ab0d56630338961500d929a8e39e918fa0c9196a
pdf-font-stream PDF embedded font (sfnt) at offset 0x8532 4360 bytes
font_02_sfnt_off00009598.bin
13773d45d81fcbdca9cae3b34eb50c23c38e7cc029edbe530cf0c6baacaaca91
pdf-font-stream PDF embedded font (sfnt) at offset 0x9598 10740 bytes