Malicious PDF — malware analysis report

Static analysis result for SHA-256 eac4302ace8c82ce…

MALICIOUS

PDF

44.4 KB Created: 2020-08-28 16:23:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51a8ae683e6c18f55d2f098efd58776a SHA-1: 458be70b7b1939497c949bd6bdc37bed44712636 SHA-256: eac4302ace8c82cef7189e3450db83d091ac6f17a995c2b3c89d5742321b81a5
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to potentially malicious redirectors like 'ttraff.com'. The document body, though heavily obfuscated, contains the same suspicious URL. This indicates a likely SEO-based link farm or traffic redirection scheme designed to lead users to malicious content. No scripts were extracted, and the primary malicious activity observed is the embedding of malicious URLs within the PDF structure.

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=goo+goo+dolls+before+it%2527s+too+late+song+meaning
    • http://nurajo.ruthieseyes.com/uploads/1/3/1/1/131163960/257a70daf13866.pdf
    • http://xafile.doublehappinessllc.com/uploads/1/3/1/4/131437318/voreg_pelemoradesimuf_xiwuten_venagudij.pdf
    • http://files.m7testcenter.com/uploads/1/3/2/7/132740398/fifopo.pdf
    • http://golexiv.siamthaispaandbeautycardiff.com/uploads/1/3/1/4/131438096/pubebomejeviw.pdf
    • http://zilataf.kingdomdetail.com/uploads/1/3/0/7/130776791/2590339.pdf
    • https://cdn.shopify.com/s/files/1/0430/4814/0949/files/mizalukalidumalonek.pdf
    • https://cdn.shopify.com/s/files/1/0431/2514/5760/files/phonetic_table_english.pdf
    • https://cdn.shopify.com/s/files/1/0428/3901/5580/files/68106519412.pdf
    • https://cdn.shopify.com/s/files/1/0448/0811/0242/files/present_continuous_tense_for_future_arrangement_exercise.pdf
    • https://cdn.shopify.com/s/files/1/0437/2103/1832/files/wonofejurizeno.pdf
    • https://cdn.shopify.com/s/files/1/0437/8551/9255/files/hip_thrust_machine_form.pdf
    • https://cdn.shopify.com/s/files/1/0466/2552/1829/files/c-cl_bond_length.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/73121007565.pdf
    • https://cdn.shopify.com/s/files/1/0427/4018/7303/files/lulatutikobofe.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_off0000614f.bin
de50d8c5bc273fa0ad1fc5e5fe9288ed3f06d108939963dc3ce36d27409fc503		 pdf-font-stream PDF embedded font (sfnt) at offset 0x614F 5220 bytes
font_01_sfnt_off00007303.bin
984ccf3ec0633ee5ab0b0587d4310dea9b0dd34a70c185e78de3376ffa571a50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7303 10288 bytes
font_02_sfnt_off0000963f.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x963F 4324 bytes

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