Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dd6da1837f1f407…

MALICIOUS

PDF

51.4 KB Created: 2020-08-22 00:56:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f7c435cff6614883c94c213ef32bf65a SHA-1: cefb5e468bb535eb56d75915b59767b10d798730 SHA-256: 7dd6da1837f1f407750d2ba41916f3c3bf1f32bce626f366bc46fac1789a8ab6
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic identifying it as a link farm pointing to known malicious redirector infrastructure. The primary malicious URL identified is https://ttraff.com/pify?keyword=new+galarian+forms+pokemon. The document body, though partially corrupted, also contains this URL and other Shopify links, suggesting a lure to generate traffic or distribute further malicious content. The ML classifier strongly supports the malicious nature of this PDF.

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=new+galarian+forms+pokemon
    • http://bebokopun.catseyetiedye.com/uploads/1/3/0/7/130775448/1ba92fe134.pdf
    • http://zofasewem.storyofyourhouse.com/uploads/1/3/1/3/131384169/49309f8a1ab0bb4.pdf
    • http://files.paulsvalleyartscouncil.org/uploads/1/3/1/4/131409909/zosunivajadegije.pdf
    • http://files.chrislilly.tv/uploads/1/3/0/7/130776728/nufopufiso.pdf
    • http://files.seniorukeensemble.com/uploads/1/3/2/8/132815015/wadijiwesir.pdf
    • https://cdn.shopify.com/s/files/1/0427/5906/1670/files/kutitamorevoteviwukozeg.pdf
    • https://cdn.shopify.com/s/files/1/0465/0552/5398/files/bhoomi_movie_songs_video.pdf
    • https://cdn.shopify.com/s/files/1/0431/9769/4109/files/16635817090.pdf
    • https://cdn.shopify.com/s/files/1/0435/4310/1591/files/81446158297.pdf
    • https://cdn.shopify.com/s/files/1/0432/3042/9346/files/cisco_ip_phone_7962_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/8624/2209/files/daburozawuzejujanex.pdf
    • https://cdn.shopify.com/s/files/1/0432/2613/6743/files/zasewakadumapexolalupemum.pdf
    • https://cdn.shopify.com/s/files/1/0437/7562/3320/files/converting_units_of_area_and_volume_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0438/0341/0593/files/nenifawibabi.pdf
    • https://cdn.shopify.com/s/files/1/0432/1335/7214/files/vewagatazor.pdf
    • https://cdn.shopify.com/s/files/1/0434/6835/7796/files/tedopuwasejedug.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000077fc.bin
871ac1fb86de9a8f14ca6ba64279118d9246d56df9644399f27ea0dfbae7abdf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77FC 5492 bytes
font_01_sfnt_off00008af1.bin
f1dd4ea8c7a172f96c5b9fd63c8ae9937d5b8c009630279aeffaa844631a206b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AF1 5348 bytes
font_02_sfnt_off00009d2e.bin
cc89a77dccbf0dec1023235ae99a12fa0bea1887e702f3da1f060ecd3f07bbf8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D2E 10320 bytes

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