Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3d4acd3e6584103…

MALICIOUS

PDF

55.6 KB Created: 2020-08-11 02:28:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 733ebd6ad734a01d3d3ae5c827c46ddc SHA-1: 95677c88f0e54152902bafc83294d96ded8526d8 SHA-256: c3d4acd3e658410370f41257f2fde3405e32af1716589a87ea241f3c27211dd1
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-Always T1059.001 PowerShell

The PDF contains numerous links, with one critical heuristic identifying it as a malicious redirector. The document body, though heavily obfuscated, contains the URL https://ttraff.com/pify?keyword=basic+strength+of+materials+interview+questions+pdf, which is also flagged as a malicious redirector. This suggests the document's primary purpose is to lure users to click on this link, likely leading to a malicious site or further download. No scripts were extracted from this sample.

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=basic+strength+of+materials+interview+questions+pdf
    • http://files.festivalrun.com/uploads/1/3/1/4/131438418/durisali.pdf
    • http://wijar.carolynskei.com/uploads/1/3/2/6/132682883/5637602.pdf
    • http://gizof.brownfieldmaine.org/uploads/1/3/1/4/131453060/431b2353e3.pdf
    • https://cdn.shopify.com/s/files/1/0429/1880/5657/files/islamic_art_geometric_design.pdf
    • https://cdn.shopify.com/s/files/1/0434/5580/7654/files/xikadinadenu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3199/4280/files/tixunozesapifad.pdf
    • https://cdn.shopify.com/s/files/1/0434/9083/6632/files/74909552138.pdf
    • https://cdn.shopify.com/s/files/1/0432/6909/5590/files/badminton_court_size_in_meter.pdf
    • https://cdn.shopify.com/s/files/1/0432/4173/4301/files/85115846818.pdf
    • https://cdn.shopify.com/s/files/1/0432/6585/1560/files/26005075950.pdf
    • https://cdn.shopify.com/s/files/1/0432/3488/5796/files/simplest_form_definition.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vidabuvuwegorowomilamum.pdf
    • https://cdn.shopify.com/s/files/1/0451/0230/1349/files/spiritual_warfare_bible_study_guides.pdf
    • https://cdn.shopify.com/s/files/1/0429/7680/5018/files/12970728399.pdf
    • https://cdn.shopify.com/s/files/1/0437/3646/5559/files/angular_tutorial_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0437/2991/1957/files/bafg_berlin_formblatt_3.pdf
    • https://cdn.shopify.com/s/files/1/0435/2986/3320/files/bhagavad_gita_story_in_malayalam.pdf
    • https://cdn.shopify.com/s/files/1/0433/7752/4888/files/9439354304.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_off00009185.bin
14d324c889c6950b7a57c1fcf9e231ece367ee08fed24c4321b744204b074c0c
pdf-font-stream PDF embedded font (sfnt) at offset 0x9185 5896 bytes
font_01_sfnt_off0000a56d.bin
02996ee900d133a8bd080c70585a62c142e35deefc6ba198933f96694e1ac0e0
pdf-font-stream PDF embedded font (sfnt) at offset 0xA56D 13404 bytes