Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c6cfa9a0d94f1ba…

MALICIOUS

PDF

40.2 KB Created: 2020-08-02 05:54:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fa55f67e6b8452828d98a1386ad9a2a9 SHA-1: c0a7f84b8eec02acf712022440fef08e419c065b SHA-256: 2c6cfa9a0d94f1ba5fadf021ffc207a538de13b5c216058138ff2e6a2576ffb6
152 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to domains associated with link farms and redirectors, indicating a phishing or scam attempt. The primary heuristic firings confirm the presence of malicious redirector links and a link farm. The document body, though obfuscated, contains text related to 'mmpi 2 test questions pdf' and a URL, suggesting a lure to trick users into clicking malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=mmpi+2+test+questions+pdf
    • http://files.chuysmex.com/uploads/1/3/1/6/131606640/5888260.pdf
    • http://files.policeaward.com/uploads/1/3/0/8/130815228/jelosediwidovab_dosugek.pdf
    • http://files.xelaboutiquehotel.com/uploads/1/3/2/7/132710783/1470448.pdf
    • http://files.obxcoachtodd.com/uploads/1/3/1/4/131454207/bavozunisif.pdf
    • https://cdn.shopify.com/s/files/1/0435/1016/9759/files/got_my_mind_set_on_you_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0431/2078/7613/files/saloralelewamotupuja.pdf
    • https://cdn.shopify.com/s/files/1/0436/9983/0939/files/27407765948.pdf
    • https://cdn.shopify.com/s/files/1/0432/6676/9058/files/76217624626.pdf
    • https://cdn.shopify.com/s/files/1/0432/4678/0566/files/geviluvepojutijidom.pdf
    • https://cdn.shopify.com/s/files/1/0432/6375/4404/files/85957941704.pdf
    • https://cdn.shopify.com/s/files/1/0434/0688/5027/files/jurufesapodon.pdf
    • https://cdn.shopify.com/s/files/1/0428/9177/2063/files/55213552531.pdf
    • https://cdn.shopify.com/s/files/1/0431/6489/3345/files/46601572916.pdf
    • https://cdn.shopify.com/s/files/1/0430/7651/8049/files/letidexulewatogaxadimom.pdf
    • https://cdn.shopify.com/s/files/1/0434/4234/0007/files/jewulu.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_off00005e4a.bin
8061486ba7877061ccb8d4ad97bcfd62791cd9df9f42f72fb1f9910a9947b91a
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E4A 5112 bytes
font_01_sfnt_off00006fb0.bin
f78451fff29751d62f0372e8f99f8e6039dbd2bf2059adb7429d82e3aa847948
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FB0 10680 bytes