Malicious PDF — malware analysis report

Static analysis result for SHA-256 6022958e64c9e607…

MALICIOUS

PDF

43.9 KB Created: 2020-08-23 09:23:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 94cf29e84883fea1e825cc1d4f36b225 SHA-1: bad9f257f28db61e1eef6f3352e0c2175f7ba08a SHA-256: 6022958e64c9e6072f8cc04403d3f91dd0b3d29ed870d14b3f9e9eb1ee5d668c
154 Risk Score

Malware Insights

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

The PDF document contains a lure for a game download, which is a common tactic for phishing or malware distribution. It embeds multiple links, with the primary one redirecting to a known malicious domain (ttraff.com). The ML classifier also strongly indicated maliciousness. The document body itself contains obfuscated text and URLs, suggesting an attempt to disguise its 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.com/pify?keyword=asphalt+8+airborne+free++windows+10
    • http://giwodevi.whittonprecision.com/uploads/1/3/1/4/131437064/832b13.pdf
    • http://nosewetiv.24hour-electricians-bridgend.co.uk/uploads/1/3/1/6/131606490/zuduxikarav-jexaf-dekepuwazumuset.pdf
    • http://files.glacierpilotslegacy.com/uploads/1/3/2/7/132740399/nisov-dusutupogi-boxidijigibug-bejoturafiji.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0432/5598/8387/files/furoralutuxowofutusa.pdf
    • https://cdn.shopify.com/s/files/1/0428/7512/5919/files/fezewujuduxurexe.pdf
    • https://cdn.shopify.com/s/files/1/0433/2827/4582/files/95698364563.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/dudegukudigedo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0305/1175/files/loaded_question_definition.pdf
    • https://cdn.shopify.com/s/files/1/0432/2541/5843/files/garrys_hood_auto_clicker.pdf
    • https://cdn.shopify.com/s/files/1/0435/3120/6808/files/lofevedabanemurur.pdf
    • https://cdn.shopify.com/s/files/1/0434/3041/2437/files/89238256518.pdf
    • https://cdn.shopify.com/s/files/1/0450/6189/8390/files/33641137242.pdf
    • https://cdn.shopify.com/s/files/1/0434/3539/3180/files/anormalidad_y_normalidad.pdf
    • https://cdn.shopify.com/s/files/1/0431/8507/8423/files/83268335543.pdf
    • https://cdn.shopify.com/s/files/1/0428/1656/9500/files/letoguvutujapakokepuxare.pdf
    • https://cdn.shopify.com/s/files/1/0429/7293/8399/files/74242536483.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005dd1.bin
816ddae3088c806560de4bfd8a6c4661ffaf2cf3ab0f988decb4da145a67e4d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DD1 5524 bytes
font_01_sfnt_off0000708e.bin
bd5e059c73f4daf3b1fa2771bb33d7ea2f5bb0de1ab62d07300ff780b537b21e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x708E 10596 bytes
font_02_sfnt_off000094bb.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94BB 4324 bytes

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