Malicious PDF — malware analysis report

Static analysis result for SHA-256 056492549a77cda1…

MALICIOUS

PDF

59.5 KB Created: 2020-07-31 17:34:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6089db3cccf11b852ee61c770917ccf4 SHA-1: a8c823490e8b45cd9ecb1dd1918f39c07ecc2469 SHA-256: 056492549a77cda1f410d46d73ae418da6a17987d1e021333812111593a569dd
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links and text that masquerade as 'Battlefront 2 cheats' to entice users to click on a malicious URL. The primary malicious URL identified is https://ttraff.ru/pify?keyword=battlefront+2+cheats, which is flagged as a malicious redirector. The document also contains a large number of links to other PDFs, suggesting a link farm or SEO poisoning tactic. No scripts were extracted, but the PDF structure and embedded links are sufficient to infer malicious intent.

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.ru/pify?keyword=battlefront+2+cheats
    • http://files.fightingforhomeice.org/uploads/1/3/1/1/131164386/benoxoxa_vikuzifib.pdf
    • http://files.thebsp.org/uploads/1/3/0/9/130969115/8028986.pdf
    • http://files.nextllcenter.com/uploads/1/3/0/8/130813827/e3bafd424d1dec.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0438/1966/3522/files/20815466116.pdf
    • https://cdn.shopify.com/s/files/1/0440/8652/6102/files/37523882088.pdf
    • https://cdn.shopify.com/s/files/1/0430/2602/2554/files/93805947956.pdf
    • https://cdn.shopify.com/s/files/1/0431/8376/7713/files/benimipi.pdf
    • https://cdn.shopify.com/s/files/1/0437/9066/3832/files/kezuwozafovozisonobej.pdf
    • https://cdn.shopify.com/s/files/1/0429/5104/9370/files/lorogosifikujanomu.pdf
    • https://cdn.shopify.com/s/files/1/0434/8212/0357/files/15654569109.pdf
    • https://cdn.shopify.com/s/files/1/0437/5127/6696/files/90387254322.pdf
    • https://cdn.shopify.com/s/files/1/0431/6289/4495/files/kakagogisapoxiwajexopoki.pdf
    • https://cdn.shopify.com/s/files/1/0428/5104/1447/files/45190907071.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mowajuvide.pdf
    • https://cdn.shopify.com/s/files/1/0434/2713/5640/files/dalifavogosu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/55313096998.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a0c4.bin
c7ab1f10eacc691b40f2df9e02ffd8775f09f3d285ab66abbe8c7bce44bf0f36		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA0C4 5152 bytes
font_01_sfnt_off0000b246.bin
20539d10fad4d8cb9bc2d7ea626661c62e9a7471f4a5182ac29d3b25eeefb42b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB246 15000 bytes

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