Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d18d0741864d5d9…

MALICIOUS

PDF

50.2 KB Created: 2020-08-25 11:23:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 23c37410b2b8b9549abc705ceeab9ba4 SHA-1: 762580b6791cce1e63f5b75b4af98dce681a40ef SHA-256: 1d18d0741864d5d9116ee4c93bebe8b7cff88f0720dc20ef6e85e23896e44f14
154 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 text related to 'Aruba 7030 controller datasheet' and the malicious URL, suggesting a lure. The PDF also exhibits a link farm behavior, with numerous links to Shopify-hosted PDFs, likely to improve search engine ranking and distribute the malicious payload. No scripts were extracted from this sample.

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.com/pify?keyword=aruba+7030+controller+datasheet
    • http://files.roejendradesigns.com/uploads/1/3/1/4/131406762/wugagumigejo.pdf
    • https://cdn.shopify.com/s/files/1/0436/3668/7008/files/network_security_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0433/5458/7288/files/migofumexadirolor.pdf
    • https://cdn.shopify.com/s/files/1/0427/4136/6951/files/gegeja.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3089/files/mewerivavufizudevatisusag.pdf
    • https://cdn.shopify.com/s/files/1/0435/1878/7736/files/napogebixixapusiwisapisa.pdf
    • https://cdn.shopify.com/s/files/1/0440/3170/5238/files/3435293734.pdf
    • https://cdn.shopify.com/s/files/1/0441/0851/3432/files/nike_brand_guidelines_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38138836364.pdf
    • https://cdn.shopify.com/s/files/1/0433/3505/7559/files/6776577816.pdf
    • https://cdn.shopify.com/s/files/1/0437/4737/7301/files/jitixosekubudukevidudi.pdf
    • https://cdn.shopify.com/s/files/1/0435/2599/6698/files/car_payment_agreement_contract_template.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_off00007d37.bin
b4a48d0482342ed74150fba72401f6106cea7d59b02a46e3e8a60ee806ad419a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D37 5540 bytes
font_01_sfnt_off00008ff8.bin
0c9a590aeeb9aecaa57240c57744842ef97894f9cf2582caad1af181d7f8d3c9
pdf-font-stream PDF embedded font (sfnt) at offset 0x8FF8 14396 bytes