Malicious PDF — malware analysis report

Static analysis result for SHA-256 c359e53667bcb986…

MALICIOUS

PDF

38.8 KB Created: 2020-08-14 12:41:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a82a09d0a49f228a31541ecbecbf6661 SHA-1: 2c74a174415cb122913d59aa0f0450eaff4777f8 SHA-256: c359e53667bcb9863c53c296e358b201ec45e59c4c0ad5b22379cc77c0f2278a
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains references to 'Avery labels 5160 excel template' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of a large number of external PDF links further indicates a link farm or SEO poisoning attempt to drive traffic to malicious infrastructure.

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=avery+labels+5160+excel+template
    • http://files.newburyporthort.org/uploads/1/3/1/4/131453028/mulejunavoparepugi.pdf
    • http://files.visualresearchnetwork.co.uk/uploads/1/3/0/9/130969572/8a41c.pdf
    • http://files.rgcgymnastics.org/uploads/1/3/1/0/131070166/546036824.pdf
    • http://mavimudol.lodgevintage.com/uploads/1/3/1/3/131384429/wufaxuxobag.pdf
    • http://files.watsonhill.com/uploads/1/3/0/7/130738975/9362585.pdf
    • https://cdn.shopify.com/s/files/1/0437/2417/7576/files/38773547187.pdf
    • https://cdn.shopify.com/s/files/1/0435/4041/4615/files/58503696856.pdf
    • https://cdn.shopify.com/s/files/1/0431/7665/7051/files/zapabubedolulorozesudapi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5935/5556/files/rite_of_anointing_of_the_sick.pdf
    • https://cdn.shopify.com/s/files/1/0428/5772/6118/files/dapix.pdf
    • https://cdn.shopify.com/s/files/1/0429/3902/3526/files/kivosupavotozefefa.pdf
    • https://cdn.shopify.com/s/files/1/0428/6336/2204/files/wikuwatesadojupoj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0517/3147/files/save_powerpoint_as.pdf
    • https://cdn.shopify.com/s/files/1/0437/5930/4858/files/tablet_screen_size.pdf
    • https://cdn.shopify.com/s/files/1/0428/0041/4883/files/10432181674.pdf
    • https://cdn.shopify.com/s/files/1/0433/8316/0999/files/jirijuxewugajugu.pdf
    • https://cdn.shopify.com/s/files/1/0435/6512/1695/files/toyota_camry_2002-_2006_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/5812/7270/files/facebook_data_analysis_using_r.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_off000056a8.bin
a4b195a64a11ede8a53450f6fa384a92011c0748dc2dd1772e65c2e13c66d7c6
pdf-font-stream PDF embedded font (sfnt) at offset 0x56A8 5908 bytes
font_01_sfnt_off00006ac3.bin
ff884d67c51a327ca14ed6205a39f3996c406daa86053c59ace80592cda35d35
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AC3 10304 bytes