Malicious PDF — malware analysis report

Static analysis result for SHA-256 6becc1c8044a2a45…

MALICIOUS

PDF

45.0 KB Created: 2020-08-10 21:16:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 14d59e782cb3a243be860c2025d69d01 SHA-1: 82e9e94edf10d48290dc022f4a6f14df0cb23f71 SHA-256: 6becc1c8044a2a4590df1be7dce6c4fe860f628933d159315a1ebaf3070b92a5
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many of which point to potentially malicious or SEO-farmed content, disguised as free downloads. The primary redirector URL, https://ttraff.ru/pify?keyword=ias+chemistry+notes+pdf+free+download, is flagged as malicious. The document body, though heavily obfuscated, contains references to the malicious URL and other PDF links, suggesting an attempt to drive traffic to malicious sites under the guise of providing educational material.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=ias+chemistry+notes+pdf+free+download
    • http://jobure.karenmccannart.net/uploads/1/3/0/8/130873995/4429351.pdf
    • http://files.finehusky.com/uploads/1/3/1/3/131379706/xuzobibibuneg.pdf
    • http://files.thecheesecakebee.com/uploads/1/3/2/6/132681316/d265668104.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0432/1817/4107/files/bonawi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6246/8516/files/70042731617.pdf
    • https://cdn.shopify.com/s/files/1/0437/7352/6178/files/27044885815.pdf
    • https://cdn.shopify.com/s/files/1/0431/8937/1029/files/1082754065.pdf
    • https://cdn.shopify.com/s/files/1/0431/3110/9540/files/saburubonati.pdf
    • https://cdn.shopify.com/s/files/1/0434/3123/1644/files/practical_law_of_attraction.pdf
    • https://cdn.shopify.com/s/files/1/0431/3877/7249/files/92646365428.pdf
    • https://cdn.shopify.com/s/files/1/0431/8108/0738/files/nameramokojuw.pdf
    • https://cdn.shopify.com/s/files/1/0439/8897/5774/files/mupevixi.pdf
    • https://cdn.shopify.com/s/files/1/0428/2669/4822/files/99756497893.pdf
    • https://cdn.shopify.com/s/files/1/0435/7206/8520/files/shoulder_dystocia_management.pdf
    • https://cdn.shopify.com/s/files/1/0449/6493/7896/files/vce_exam_simulator_cracked.pdf
    • https://cdn.shopify.com/s/files/1/0432/9367/1588/files/lidumesivu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0702/5060/files/75147761857.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000624f.bin
e0184a94bf9022097fabe7d9a5b6c3bda28fd85d96733740e83d355fc8703853		 pdf-font-stream PDF embedded font (sfnt) at offset 0x624F 5316 bytes
font_01_sfnt_off00007447.bin
d3712949e9ee514dd8f21068b0f2425e123860d5132f13d93482e9a2331783e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7447 10672 bytes
font_02_sfnt_off000098b7.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x98B7 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.