Malicious PDF — malware analysis report

Static analysis result for SHA-256 f596b05bd635b34a…

MALICIOUS

PDF

61.7 KB Created: 2020-08-19 09:00:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ffa81f099ca48c797e5b404f9762ab3 SHA-1: f4f5bebecf007b34b25cc6d02de1c95f4e729379 SHA-256: f596b05bd635b34a708b234820cde5917bdb2d290dbe0a358618a0283286703a
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external sites, suggesting a link farm or redirection strategy. One prominent URL, 'https://ttraff.ru/pify?keyword=ayodhya+ram+mandir+pic', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this same URL, reinforcing its role in the attack. The presence of numerous PDF links and a malicious redirector indicates a phishing or malware distribution attempt.

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.ru/pify?keyword=ayodhya+ram+mandir+pic
    • http://files.keywestrickburnett.com/uploads/1/3/2/8/132814791/kavulosovaw-xinavinow.pdf
    • http://pubako.mybowpeepboutique.com/uploads/1/3/2/3/132303382/ff5d0bc59.pdf
    • http://files.fodraszbutor.com/uploads/1/3/1/4/131453713/vowisajitabinadovove.pdf
    • http://konopan.ultratech-electronics.com/uploads/1/3/1/4/131407158/gefefe.pdf
    • http://tusinu.edwattsframing.com/uploads/1/3/0/8/130813490/norazigugex_vikejimodadap_zuwomajubid_wevezinaju.pdf
    • https://cdn.shopify.com/s/files/1/0433/7618/1398/files/im_no_superman.pdf
    • https://cdn.shopify.com/s/files/1/0427/8288/4006/files/visuvafatule.pdf
    • https://cdn.shopify.com/s/files/1/0430/6645/8265/files/java_version_8._1.pdf
    • https://cdn.shopify.com/s/files/1/0433/1615/0427/files/20380680258.pdf
    • https://cdn.shopify.com/s/files/1/0432/5533/3027/files/puvafukomifixebogifaf.pdf
    • https://cdn.shopify.com/s/files/1/0433/6350/0197/files/gukixudiripikeni.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/vobizudovudureza.pdf
    • https://cdn.shopify.com/s/files/1/0435/2258/8836/files/balochi_language.pdf
    • https://cdn.shopify.com/s/files/1/0432/5913/4112/files/bamu_digital_university_exam_time_table_2020.pdf
    • https://cdn.shopify.com/s/files/1/0437/8250/4600/files/wastewater_treatment_plant_project.pdf
    • https://cdn.shopify.com/s/files/1/0435/3097/7434/files/cengage_coordinate_geometry_free.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off0000cfea.bin
0cf9646502113321304633ec03538b91a69b5fc5cf615da14460e52d1e0cc2c3
decompressed-pdf-stream PDF FlateDecoded stream at offset 0xCFEA 7172 bytes
font_00_sfnt_off00008f92.bin
52666eaa88e9e0b074ea62bbe7f12f65323dbc10daebfff0ba4478f5f02be1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x8F92 5196 bytes
font_01_sfnt_off0000a116.bin
d0c9e33916e9e64e42e31bcf0d345f6c2fcd41735b1a34df0119bd0eb1094281
pdf-font-stream PDF embedded font (sfnt) at offset 0xA116 3720 bytes
font_02_sfnt_off0000ac7a.bin
976167b0f63c57524fa14a9f05964816b77b232e27fdd8d1882d6f48d6611869
pdf-font-stream PDF embedded font (sfnt) at offset 0xAC7A 10288 bytes