Malicious PDF — malware analysis report

Static analysis result for SHA-256 aab815583dc18663…

MALICIOUS

PDF

46.3 KB Created: 2020-08-26 02:42:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61367876992a494757ff6c93e734a8dd SHA-1: dfab343f2514ffaf3039ff3815eb54464c16853e SHA-256: aab815583dc18663a5b1e1c8b5fe53479eadc04ea2d53a724853178b083632f6
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The document body, though heavily obfuscated, contains text related to 'frases para jugar telefono descompue' and references the wkhtmltopdf tool, suggesting a lure. The primary malicious URL identified is ttraff.com, which is flagged as a malicious redirector. The presence of numerous links, including those hosted on Shopify, indicates an attempt to distribute malicious content or engage in SEO poisoning.

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=frases+para+jugar+telefono+descompue
    • http://leved.2400chestnut.com/uploads/1/3/0/8/130874276/659152.pdf
    • http://tosis.tunertek.com/uploads/1/3/2/6/132682076/110490803.pdf
    • http://files.projectautismcanada.com/uploads/1/3/1/1/131164425/nurovefukawuzix.pdf
    • http://raforelo.motivationalcheck.com/uploads/1/3/2/7/132710621/ritovalegedagika.pdf
    • https://cdn.shopify.com/s/files/1/0428/1643/8438/files/79284635546.pdf
    • https://cdn.shopify.com/s/files/1/0429/2077/1750/files/64159004263.pdf
    • https://cdn.shopify.com/s/files/1/0433/9531/7918/files/17266458499.pdf
    • https://cdn.shopify.com/s/files/1/0447/4994/7029/files/guia_de_campings_espaa.pdf
    • https://cdn.shopify.com/s/files/1/0435/2393/2311/files/noweneve.pdf
    • https://cdn.shopify.com/s/files/1/0428/6706/4998/files/bemofobusuxaxuj.pdf
    • https://cdn.shopify.com/s/files/1/0431/4133/3147/files/53257276507.pdf
    • https://cdn.shopify.com/s/files/1/0438/1389/6352/files/account_equation.pdf
    • https://cdn.shopify.com/s/files/1/0431/2704/6298/files/bogaretusatosibafevirex.pdf
    • https://cdn.shopify.com/s/files/1/0430/6668/7642/files/non_enzymatic_browning.pdf
    • https://cdn.shopify.com/s/files/1/0435/8724/0093/files/kawimubagixopukupozuk.pdf
    • https://cdn.shopify.com/s/files/1/0437/3915/2538/files/grad_school_application_cv_template.pdf
    • https://cdn.shopify.com/s/files/1/0432/7515/7670/files/dell_poweredge_r740_server_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tanedikefiresemur.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_off00007184.bin
ad02e48d6d9fa928fbce64ea77e53fa0584c2881daca002413c4986e6b4ccdcb
pdf-font-stream PDF embedded font (sfnt) at offset 0x7184 5504 bytes
font_01_sfnt_off0000842c.bin
03324b4b1efb21f1c4e5da2c493ee0ad1473d40e3871584cad39a446ebc4d8ff
pdf-font-stream PDF embedded font (sfnt) at offset 0x842C 11836 bytes