Malicious PDF — malware analysis report

Static analysis result for SHA-256 fedd8a7a51d02296…

MALICIOUS

PDF

65.4 KB Created: 2020-09-17 07:44:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d0a89250ce95d6643362fa84bd1cfb38 SHA-1: 913004165462e4edbb19dee5d00bcd7ba0fb0e18 SHA-256: fedd8a7a51d0229662605e6ae4c1f923b4ac48c62f7c9c48b8ffae63bbba1c9a
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.link/wix?keyword=pathfinder+saurian+shaman+guide'. This indicates the document's primary purpose is to redirect the user to a potentially harmful site. The presence of a large number of external PDF links, many pointing to suspicious domains, further supports a malicious intent, likely for SEO poisoning or driving traffic to malicious 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.link/wix?keyword=pathfinder+saurian+shaman+guide
    • http://files.rapidballroom.com/uploads/1/3/2/7/132740763/5994886.pdf
    • http://files.op-com.co.uk/uploads/1/3/1/3/131380504/9381456.pdf
    • http://dogikeru.saigeranchgoats.com/uploads/1/3/1/3/131398024/4e0bb9.pdf
    • https://cdn.shopify
    • https://47e011cf-64f8-46ce-ba23-18b2718e8efe.filesusr.com/ugd/c8683e_30faedd5238c4fbaa7512bfcf0d22327.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0429/3646/7623/files/rgb_or_ycbcr.pdf
    • https://cdn.shopify.com/s/files/1/0430/8575/8628/files/45521062341.pdf
    • https://cdn.shopify.com/s/files/1/0437/7228/0981/files/tekezodotugatopuwaxowuta.pdf
    • https://cdn.shopify.com/s/files/1/0429/0707/4723/files/atsg_automatic_transmission_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/6290/2438/files/rurogonixalixalip.pdf
    • https://cdn.shopify.com/s/files/1/0427/5752/1574/files/90735431678.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_off0000b72e.bin
7c4da46f06da41361a78695035141745a5ebcd3d73b98425daf5f3f3a406c2d9
pdf-font-stream PDF embedded font (sfnt) at offset 0xB72E 5064 bytes
font_01_sfnt_off0000c826.bin
76d849b71a54158aba29182d09368252f588b894a96b9dbaf59daf5f85b2daee
pdf-font-stream PDF embedded font (sfnt) at offset 0xC826 10108 bytes
font_02_sfnt_off0000eaa7.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xEAA7 4324 bytes