Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a5969c3f432dc0a…

MALICIOUS

PDF

40.4 KB Created: 2020-08-12 02:50:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e78ecee96afb119b8940c47f8683671 SHA-1: 5b33d29361fd453ea169680e60487abc002df4dc SHA-256: 8a5969c3f432dc0a5cf28178aa0fb443dd6901f8fee3c29327e3d6025cd78f67
150 Risk Score

Malware Insights

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

The PDF contains a link farm with a primary malicious redirector at ttraff.com. The document body, though garbled, suggests a lure related to 'printed notes pdf'. The embedded links, including the malicious one, are likely intended to direct the user to malicious content or further stages of an attack. No scripts were extracted from this sample.

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=vaid+sir+anthropology+printed+notes+pdf
    • http://mafojeni.portfolio-people.com/uploads/1/3/2/8/132814930/xelugiw.pdf
    • http://files.followthrumarketing.ca/uploads/1/3/1/4/131437859/fadife_zoxalonokuziz_wigoredu_derodewes.pdf
    • http://files.a-mfoundation.com/uploads/1/3/1/1/131163902/lokoju_zofenitikipulu_gosuxejeki_damulewaj.pdf
    • http://files.saltysidewalks.com/uploads/1/3/0/9/130969926/3647818.pdf
    • https://cdn.shopify.com/s/files/1/0436/0667/1517/files/fevimekunapexodozov.pdf
    • https://cdn.shopify.com/s/files/1/0433/7169/2188/files/space_engineers_airlock.pdf
    • https://cdn.shopify.com/s/files/1/0429/6730/2295/files/27545314862.pdf
    • https://cdn.shopify.com/s/files/1/0433/8765/0211/files/john_deere_7000_planter_population_chart.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8867/files/15745907147.pdf
    • https://cdn.shopify.com/s/files/1/0429/1543/0559/files/23093822928.pdf
    • https://cdn.shopify.com/s/files/1/0430/0144/6554/files/46280621397.pdf
    • https://cdn.shopify.com/s/files/1/0440/3471/9909/files/mepowonesupibuma.pdf
    • https://cdn.shopify.com/s/files/1/0444/3032/7975/files/importancia_de_los_agentes_economicos.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2691/files/patutaw.pdf
    • https://cdn.shopify.com/s/files/1/0430/2562/9347/files/centrifugation_experiment.pdf
    • https://cdn.shopify.com/s/files/1/0432/6513/0660/files/92327422931.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
font_00_sfnt_off000049ae.bin
12e3452e85ebb75ebeeff9dfba56418afdb2fe39384e57fd7e0dffe6e3e53d1c
pdf-font-stream PDF embedded font (sfnt) at offset 0x49AE 5372 bytes
font_01_sfnt_off00005bf6.bin
d35babbf0e89d90ab98eb1b5c6654450a7d1e9ed764218c1955b11a46fc2c176
pdf-font-stream PDF embedded font (sfnt) at offset 0x5BF6 10248 bytes
font_02_sfnt_off00007f2b.bin
6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F2B 16164 bytes