Malicious PDF — malware analysis report

Static analysis result for SHA-256 f182d22e1c15736f…

MALICIOUS

PDF

43.3 KB Created: 2020-08-15 01:30:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2cb34835759a0f06b0a152ee74c9d836 SHA-1: a19da465a5091a47e50ac60b84c6835eb965109a SHA-256: f182d22e1c15736f9bc5c3254d20334c731727d7132d6bd4846f91e3eb09ff77
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is designed to lead users to malicious content. The document body, though partially corrupted, suggests a lure related to a 'leave form', likely intended to trick users into clicking the malicious link. The presence of numerous other links to Shopify and other domains, as indicated by the PDF_SEO_LINK_FARM heuristic, further supports a malicious intent to distribute harmful content.

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=hse+carry+over+of+leave+form
    • http://pomewumim.trishsjewelryshop.com/uploads/1/3/1/4/131453784/tabewemabomut.pdf
    • http://files.completelykissablelips.com/uploads/1/3/0/8/130814382/gujelesijavedim_papime_vesijojeretemi.pdf
    • http://files.surfsportsforum.com/uploads/1/3/1/3/131381679/1721290.pdf
    • http://files.thedoghousejazzbar.co.uk/uploads/1/3/1/4/131453429/949896.pdf
    • https://cdn.shopify.com/s/files/1/0431/1446/3394/files/89063608549.pdf
    • https://cdn.shopify.com/s/files/1/0447/6724/8535/files/63148650204.pdf
    • https://cdn.shopify.com/s/files/1/0427/9592/5671/files/ancylostomiasis_pada_anjing.pdf
    • https://cdn.shopify.com/s/files/1/0437/5461/9041/files/cammack_upholstered_platform_bed.pdf
    • https://cdn.shopify.com/s/files/1/0432/9370/4356/files/madameruf.pdf
    • https://cdn.shopify.com/s/files/1/0429/8558/6849/files/56343494548.pdf
    • https://cdn.shopify.com/s/files/1/0429/4171/0499/files/6906361673.pdf
    • https://cdn.shopify.com/s/files/1/0434/9798/0056/files/pugurojuga.pdf
    • https://cdn.shopify.com/s/files/1/0437/1762/3957/files/24122299216.pdf
    • https://cdn.shopify.com/s/files/1/0433/7677/1224/files/46794429353.pdf
    • https://cdn.shopify.com/s/files/1/0437/5127/6696/files/57142071241.pdf
    • https://cdn.shopify.com/s/files/1/0438/4459/9958/files/rs3_summoning_guide.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8090/files/98341320846.pdf
    • https://cdn.shopify.com/s/files/1/0432/4343/8242/files/36594111715.pdf
    • https://cdn.shopify.com/s/files/1/0433/1310/2998/files/53555407111.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_off00006c3c.bin
5b5d7c69edc613439be45fae8d0f218636aa1076a7c0e802a6212618d30220a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C3C 5148 bytes
font_01_sfnt_off00007dae.bin
0c8946612cd763be4650cf11b61081f7feeb3e727121213ccafb15bf756dd28d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DAE 10064 bytes

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