Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1edf87a2c50b4fa…

MALICIOUS

PDF

42.9 KB Created: 2020-08-17 11:20:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e00900545f703f29d8c3a6088cd49f6 SHA-1: bdd5834f30f174a39feb1ebb977eb8291378071c SHA-256: a1edf87a2c50b4fad1f9b8a1f3eab7486068f16b008c4465c80f6b26cef30c96
120 Risk Score

Malware Insights

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

The PDF document contains a clear lure for a 'free online investment stock portfolio tracker spreadsheet' which redirects to a malicious URL. This suggests a phishing or scam attempt. The PDF itself is structured as a link farm, with many links pointing to external PDF files, likely for SEO manipulation or to host further malicious content. The primary malicious URL identified is ttraff.cc, which is flagged as a redirector.

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=free+online+investment+stock+portfolio+tracker+spreadsheet
    • http://files.gratefulglass.net/uploads/1/3/0/7/130776054/zizaliwowipujux-fizuvibur-sigalelusu-titej.pdf
    • http://gilanor.givoie.com/uploads/1/3/1/1/131164250/8644611.pdf
    • http://bigegufi.sno-puffsamoyeds.com/uploads/1/3/1/1/131164250/8ddf5e59f78.pdf
    • http://dewodalu.groff4life.com/uploads/1/3/0/8/130815031/xaremozexojora_bubulerowote_kibibudag_baxokefijexova.pdf
    • https://cdn.shopify.com/s/files/1/0440/4156/8421/files/jurnal_kebutuhan_dasar_manusia.pdf
    • https://cdn.shopify.com/s/files/1/0429/1903/5033/files/lawebexisili.pdf
    • https://cdn.shopify.com/s/files/1/0432/8561/0654/files/pet_cambridge_exam_2020.pdf
    • https://cdn.shopify.com/s/files/1/0427/8904/4383/files/zetesobokojoropenejunid.pdf
    • https://cdn.shopify.com/s/files/1/0430/4823/9257/files/15601468469.pdf
    • https://cdn.shopify.com/s/files/1/0437/0835/0615/files/colocar_assinatura_digital_em_documento.pdf
    • https://cdn.shopify.com/s/files/1/0433/1126/7990/files/12186075941.pdf
    • https://cdn.shopify.com/s/files/1/0432/8564/3420/files/kugujakaro.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/zozipulojejerolopalefaz.pdf
    • https://cdn.shopify.com/s/files/1/0429/4865/7311/files/petofeto.pdf
    • https://cdn.shopify.com/s/files/1/0436/1807/4786/files/94493465676.pdf
    • https://cdn.shopify.com/s/files/1/0436/0008/5160/files/88750205163.pdf
    • https://cdn.shopify.com/s/files/1/0434/7677/9174/files/carnival_cruise_credit_card_authorization_form.pdf
    • https://cdn.shopify.com/s/files/1/0431/3081/4626/files/water_pollution_in_marathi_free_download.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_off0000678d.bin
0faf233e810b0594b6f543d126de162c5ddb60d946c551afe9f444e0c1180978
pdf-font-stream PDF embedded font (sfnt) at offset 0x678D 5476 bytes
font_01_sfnt_off00007a08.bin
da114f5085063da1d44b3c781c37468148fd350c50e66af6f006b27834706d0b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A08 10548 bytes