Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f7ced8eb892a506…

MALICIOUS

PDF

43.1 KB Created: 2020-08-10 09:58:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9a8d1177bbe171097af18370ea684f68 SHA-1: 24118708c045c0e5aeab9316df381420ae2118a5 SHA-256: 2f7ced8eb892a506d52107185715fa8894aeccbc96695fcd31bfcc5a08ec3bc8
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The primary malicious URL identified is https://ttraff.com/pify?keyword=writing+equations+of+parallel+and+perpendicular+lines+pdf, which is likely used to redirect users to phishing or malware distribution sites. The document body contains garbled text, but the presence of numerous embedded links, including the malicious one, strongly suggests a social engineering attack aimed at luring users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=writing+equations+of+parallel+and+perpendicular+lines+pdf
    • http://files.schoolcraftcd.org/uploads/1/3/2/6/132681985/dexixavinujizokuk.pdf
    • http://files.hammerartgallery.com/uploads/1/3/1/3/131382841/nekafilo_vefufowusijake_binon.pdf
    • http://files.scubadivingperhentian.com/uploads/1/3/2/6/132681062/4306742.pdf
    • http://files.deliverydoula.com/uploads/1/3/1/0/131070938/zunolu_bavulawenisil.pdf
    • https://cdn.shopify.com/s/files/1/0431/1311/9905/files/68862498424.pdf
    • https://cdn.shopify.com/s/files/1/0427/7318/4678/files/besonumapazenanim.pdf
    • https://cdn.shopify.com/s/files/1/0435/5738/8440/files/html5_empty_template.pdf
    • https://cdn.shopify.com/s/files/1/0430/4027/6642/files/git_copy_file.pdf
    • https://cdn.shopify.com/s/files/1/0427/5362/2182/files/babson_college_map.pdf
    • https://cdn.shopify.com/s/files/1/0430/8038/4674/files/65594437702.pdf
    • https://cdn.shopify.com/s/files/1/0431/4100/5480/files/45602390034.pdf
    • https://cdn.shopify.com/s/files/1/0433/8489/7701/files/mivinidapogitolid.pdf
    • https://cdn.shopify.com/s/files/1/0431/8117/9029/files/fibepi.pdf
    • https://cdn.shopify.com/s/files/1/0438/8562/5499/files/functionalism_and_structuralism.pdf
    • https://cdn.shopify.com/s/files/1/0434/3070/7356/files/8711462058.pdf
    • https://cdn.shopify.com/s/files/1/0430/0839/3369/files/lenepupixefaxe.pdf
    • https://cdn.shopify.com/s/files/1/0438/6082/0133/files/libro_de_instrumentacion_industrial_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0440/7299/2918/files/99095983319.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_off0000677a.bin
9061c09a924780445f28461b3182dbccf11638e9b019fe75ae6e1bfe6141faaf
pdf-font-stream PDF embedded font (sfnt) at offset 0x677A 5464 bytes
font_01_sfnt_off00007a26.bin
179651b8d5404fe2f984bb6b0cbba1e8fc6046169893e1ab45b4ce10369d847d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A26 10740 bytes