Malicious PDF — malware analysis report

Static analysis result for SHA-256 8598cd46d68b8f63…

MALICIOUS

PDF

50.4 KB Created: 2020-08-14 18:28:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c666d34ce80bd8d2193ddae40a4b429 SHA-1: f77570d9aa3bd03c5169208f85f2111b6c0ddf79 SHA-256: 8598cd46d68b8f635ff89c5e32a99e10f8ee5a76327b3b22876ee4add9692e44
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, a technique often used to distribute malicious content or phish for information. The primary URL, https://ttraff.com/pify?keyword=search+console+api+google+sheets, is identified as a malicious redirector, indicating an attempt to lead the user to a harmful destination. The document body is heavily obfuscated, but the presence of numerous links, including those hosted on Shopify, suggests a link farm or SEO poisoning tactic to lure unsuspecting users. No scripts were extracted, limiting the analysis of direct payload execution.

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=search+console+api+google+sheets
    • http://biwodura.microskytech.com/uploads/1/3/1/6/131636655/2dffaa7d9df40dc.pdf
    • http://files.findingpurposeandjoy.com/uploads/1/3/1/4/131410007/973771e528cdfa1.pdf
    • http://sumum.napavalleycharters.com/uploads/1/3/1/8/131871864/7773900.pdf
    • https://cdn.shopify.com/s/files/1/0430/1979/6633/files/85666882688.pdf
    • https://cdn.shopify.com/s/files/1/0433/3089/6026/files/nopurosalumuzagazuzud.pdf
    • https://cdn.shopify.com/s/files/1/0432/5523/4710/files/at_last_a_life_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/9121/3990/files/jufenozadutopuw.pdf
    • https://cdn.shopify.com/s/files/1/0434/2031/9893/files/51265290030.pdf
    • https://cdn.shopify.com/s/files/1/0437/1460/9305/files/sleep_apnea_treatment_options.pdf
    • https://cdn.shopify.com/s/files/1/0436/9947/0486/files/82197794237.pdf
    • https://cdn.shopify.com/s/files/1/0430/8110/5575/files/guida_turistica_cagliari.pdf
    • https://cdn.shopify.com/s/files/1/0430/3739/3049/files/autism_spectrum_disorder_symptoms.pdf
    • https://cdn.shopify.com/s/files/1/0434/4093/0983/files/78255063067.pdf
    • https://cdn.shopify.com/s/files/1/0431/5945/3845/files/how_to_craft_eye_of_ender.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/libidurekatomanazavevufi.pdf
    • https://cdn.shopify.com/s/files/1/0438/9548/8680/files/brewingz_menu.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_off000085ef.bin
fad69851c7590b540eb39a6afbf1982a036de35605ea5be4f43fe7e30eb3b30d
pdf-font-stream PDF embedded font (sfnt) at offset 0x85EF 5300 bytes
font_01_sfnt_off000097dd.bin
d918852899765e28c26fe705dc9d50d83e028b3a9f347d7d67018d527f74f6ad
pdf-font-stream PDF embedded font (sfnt) at offset 0x97DD 10840 bytes