Malicious PDF — malware analysis report

Static analysis result for SHA-256 eac98d006aff4083…

MALICIOUS

PDF

32.9 KB Created: 2020-08-11 10:44:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a74c2b6f9c5df0d57e43b649cc115e05 SHA-1: 15254db6decd7635c860830588b6f1f5559ad8e9 SHA-256: eac98d006aff40836ddd32f773da721c1c4987f453934890e98f676085c3c700
150 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the critical PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The primary malicious URL is https://ttraff.cc/wb?keyword=moedor%20de%20cafe%20hamilton%20beach%20manual, which is presented as a coffee grinder manual. The document body, though partially corrupted, contains this URL and other benign-looking Shopify URLs, likely part of a SEO poisoning or link farm tactic.

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/wb?keyword=moedor%20de%20cafe%20hamilton%20beach%20manual
    • http://files.hensafe.net/uploads/1/3/0/7/130775123/7941476.pdf
    • http://files.sowilocommunityhigh.org/uploads/1/3/2/7/132740275/xoder-bodap-wunuvaw.pdf
    • http://musul.millercounselingserv.com/uploads/1/3/2/8/132814930/gexoxito-lamagijopevi-jisevuro.pdf
    • http://files.raymondnallyconstruction.com/uploads/1/3/0/8/130813698/bewonile_detigi.pdf
    • http://files.schrockguide.net/uploads/1/3/2/6/132682076/69f2f9fd6f.pdf
    • https://cdn.shopify.com/s/files/1/0437/7359/1703/files/inoculation_method.pdf
    • https://cdn.shopify.com/s/files/1/0429/5491/6003/files/45869992224.pdf
    • https://cdn.shopify.com/s/files/1/0431/8127/7345/files/govikevaxofesexov.pdf
    • https://cdn.shopify.com/s/files/1/0433/9512/1319/files/6479674429.pdf
    • https://cdn.shopify.com/s/files/1/0430/0272/4506/files/rutofifewi.pdf
    • https://cdn.shopify.com/s/files/1/0430/5901/9933/files/davis_drug_guide_amiodarone.pdf
    • https://cdn.shopify.com/s/files/1/0427/9740/0223/files/vasiz.pdf
    • https://cdn.shopify.com/s/files/1/0428/9629/4051/files/zuduse.pdf
    • https://cdn.shopify.com/s/files/1/0433/6254/9910/files/30898665142.pdf
    • https://cdn.shopify.com/s/files/1/0432/4153/7696/files/62086718015.pdf
    • https://cdn.shopify.com/s/files/1/0431/0165/1105/files/general_zoology_lecture_notes.pdf
    • https://cdn.shopify.com/s/files/1/0433/3309/1480/files/gopunixetematupopowejej.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004389.bin
2610d877a85c111bae59ae52e70848c977943b721ec0db7857a884a5f1f51bc2
pdf-font-stream PDF embedded font (sfnt) at offset 0x4389 5228 bytes
font_01_sfnt_off0000552d.bin
1d76dec0281b834a7514e64307896f985805bfe8d95d7f654b8f062b0ba43acc
pdf-font-stream PDF embedded font (sfnt) at offset 0x552D 10480 bytes