Malicious PDF — malware analysis report

Static analysis result for SHA-256 97732cb00613527d…

MALICIOUS

PDF

53.6 KB Created: 2020-08-09 11:03:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8abd2dbe6772d2d3c7de9ef7f0961520 SHA-1: ed332030e61c7c4b1244243efbeef6830aa0025a SHA-256: 97732cb00613527d6ce85b964c6356d05e027dcc9f13ef7bf2827dc32c8f9839
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector at 'https://ttraff.com/pify?keyword=lautr%25C3%25A9amont+gaston+bachelard+pdf'. Another critical heuristic indicates a PDF link farm, suggesting the document is used to distribute traffic to various external resources. The presence of numerous shopify.com links, some confirmed benign and others unknown, alongside other suspicious domains, reinforces the link farm behavior. The document body is heavily obfuscated and contains the primary malicious URL, indicating its purpose is to redirect users to potentially harmful content.

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=lautr%25C3%25A9amont+gaston+bachelard+pdf
    • http://files.mrsleonard2ndgrade.com/uploads/1/3/1/1/131163872/20d8e8003b.pdf
    • http://files.bethelhouseinc.org/uploads/1/3/2/7/132712080/teputom.pdf
    • http://nelupaked.askweklar.net/uploads/1/3/1/3/131380213/93603.pdf
    • https://cdn.shopify.com/s/files/1/0431/4379/0760/files/noun_clauses_examples.pdf
    • https://cdn.shopify.com/s/files/1/0430/1655/2605/files/bilojeserarupaji.pdf
    • https://cdn.shopify.com/s/files/1/0436/9671/7992/files/catia_training_report.pdf
    • https://cdn.shopify.com/s/files/1/0438/9175/3115/files/nutrition_ethiopia.pdf
    • https://cdn.shopify.com/s/files/1/0434/0622/9654/files/98434466691.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37394074323.pdf
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/ronarokur.pdf
    • https://cdn.shopify.com/s/files/1/0448/2806/5949/files/quantum_explanation_of_photoelectric_effect.pdf
    • https://cdn.shopify.com/s/files/1/0431/9831/6707/files/bikaxuzijomezo.pdf
    • https://cdn.shopify.com/s/files/1/0438/5194/0000/files/1137242436.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00009cbe.bin
b41422542352ebe7fd922a06c10f12881c807e138571c046408f52bedb6c1218
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x9CBE 24576 bytes
font_00_sfnt_off00006273.bin
5ef53717d6828693ad8e653245bd2b9054583e406aa8778d014b42884c13253a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6273 5792 bytes
font_01_sfnt_off000075c1.bin
1ae22b1d68b14b7bc1ca513e026c3c7a2e12ac3ba078c49a7221c71a80e2cf8e
pdf-font-stream PDF embedded font (sfnt) at offset 0x75C1 12196 bytes