Malicious PDF — malware analysis report

Static analysis result for SHA-256 3812f4b3da4a4ef3…

MALICIOUS

PDF

37.8 KB Created: 2020-08-30 10:00:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 336f24e5e462a2925b52c5fba66fbf8c SHA-1: 220669c38b6f5f1a0d0919a082c0a32d60c10cb2 SHA-256: 3812f4b3da4a4ef3ec74c419c276dafa772ad88f0dd353faccb90d2172c641be
152 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'Pokemon crystal gba rom download' and the malicious URL. This suggests a social engineering lure to trick users into clicking the link, which likely leads to malware or a phishing site.

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.cc/wix?keyword=pokemon+crystal+gba+rom+download
    • https://static.usrfiles.com/ugd/3f80ec_f7f2f75ebbb94bd5ba3d73e8a1112257.pdf
    • https://static.usrfiles.com/ugd/01e791_fb81163ba58a4066a240ffaa2613dc7a.pdf
    • https://static.usrfiles.com/ugd/1b8612_7f6ec3e43cd14d258ecc5ea129ce983c.pdf
    • https://static.usrfiles.com/ugd/822ecd_f2b9ee5fddcf47cab6ebac76d51791e6.pdf
    • https://cdn.shopify.com/s/files/1/0440/1207/7206/files/73274010055.pdf
    • https://cdn.shopify.com/s/files/1/0430/3549/2503/files/34193589750.pdf
    • https://cdn.shopify.com/s/files/1/0431/0673/0144/files/38902666429.pdf
    • https://cdn.shopify.com/s/files/1/0438/5787/1008/files/716250666.pdf
    • https://cdn.shopify.com/s/files/1/0427/4028/5607/files/69114526111.pdf
    • https://cdn.shopify.com/s/files/1/0427/8861/8396/files/xudiwomajiwizumiwamefag.pdf
    • https://cdn.shopify.com/s/files/1/0430/6203/4589/files/61665140414.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_off000053c6.bin
3d223611d937137a9534908a222ce3b137e24cb1799244729b9c8cc23a11cfb8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53C6 5660 bytes
font_01_sfnt_off00006701.bin
1ed07338601c42a824171051f4354366302a53f6050fc5f07a52951541c97135		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6701 10420 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.