Malicious PDF — malware analysis report

Static analysis result for SHA-256 be5d624d4ccd89cc…

MALICIOUS

PDF

40.2 KB Created: 2020-08-11 21:49:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d271d7d16173123fe0a8a99aaa62920 SHA-1: 3ce9e797f50a3541a8e9da3157001c85a43a038f SHA-256: be5d624d4ccd89cc377d70738aa01e14e09bb43e6b82ac857984700a35d0a24a
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 large number of external links, indicative of an SEO link farm. The primary malicious URL identified is ttraff.com, which is known for redirecting to malicious content. The document body, though heavily obfuscated, contains references to the same malicious URL and benign-looking PDF filenames hosted on Shopify, suggesting a lure to disguise the malicious intent. No scripts were extracted, limiting the analysis of direct payload execution.

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/wb?keyword=deep%20purple%20highway%20star%20tab%20pdf
    • http://files.keenwraps.com/uploads/1/3/1/8/131856992/saremomap.pdf
    • http://files.earthcarecollective.org/uploads/1/3/1/4/131437983/wuvaxu.pdf
    • http://files.pennjournalconlaw.com/uploads/1/3/2/6/132682694/bawibixijuzawo.pdf
    • http://files.dreamcatcheralpacas.com/uploads/1/3/1/3/131381679/wawubetokuxazumoroga.pdf
    • https://cdn.shopify.com/s/files/1/0432/6414/7609/files/simple_english_sentences_with_tamil_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0437/8879/6065/files/chilton_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0436/3495/0304/files/jitivelazoko.pdf
    • https://cdn.shopify.com/s/files/1/0447/1911/2345/files/be_used_to_grammar.pdf
    • https://cdn.shopify.com/s/files/1/0435/5689/6927/files/89929330521.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/7770754460.pdf
    • https://cdn.shopify.com/s/files/1/0433/9105/8078/files/30705562629.pdf
    • https://cdn.shopify.com/s/files/1/0433/6897/2444/files/80850067785.pdf
    • https://cdn.shopify.com/s/files/1/0440/5516/7126/files/64754536537.pdf
    • https://cdn.shopify.com/s/files/1/0437/4259/3189/files/speaking_in_cod_tongues.pdf
    • https://cdn.shopify.com/s/files/1/0439/2553/6936/files/mathias_shaw_vanilla.pdf
    • https://cdn.shopify.com/s/files/1/0445/4694/9279/files/behaviorismo_radical_scielo.pdf
    • https://cdn.shopify.com/s/files/1/0433/3407/4523/files/movatepik.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_off000051fd.bin
66cb8853356fbb69c8e28407a8f8b96c95eb3cb4a8f7f73ed3561112e1bd1246
pdf-font-stream PDF embedded font (sfnt) at offset 0x51FD 5636 bytes
font_01_sfnt_off0000652f.bin
185c3a34d17505ce2639446a401c409446107a9788f7b7b1485e39a0c211c1e6
pdf-font-stream PDF embedded font (sfnt) at offset 0x652F 14372 bytes