Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3022f2f0184c26e…

MALICIOUS

PDF

40.3 KB Created: 2020-08-31 21:27:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ed9c19e7e385928d016ac69bfb6dc2ae SHA-1: 3af4e6a2232747f6cea43d3d4e3c928e5568c371 SHA-256: c3022f2f0184c26e5e2b63f9a7051c9ac588c98c3df52be44f77e716bdeaeee6
152 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to 'Into the wild imdb parents guide' and the malicious URL, suggesting a lure to trick users into visiting the redirector. The ML classifier also strongly indicated maliciousness.

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=into+the+wild+imdb+parents+guide
    • https://static.usrfiles.com/ugd/e4a001_d7e4edba1a4a471a94ac3a38e8431db3.pdf
    • https://static.usrfiles.com/ugd/b8c837_5ebbf8250bd9413c8ee89fee0159f020.pdf
    • https://static.usrfiles.com/ugd/5af86b_50b85b011a654e0d969584400dc54f43.pdf
    • https://static.usrfiles.com/ugd/b8c837_be71fa5d1a6b4d0cad1d0193955de4b0.pdf
    • https://static.usrfiles.com/ugd/1cc7e8_55c779d08ad144ab8ba3c83c0348d2fc.pdf
    • https://static.usrfiles.com/ugd/b8c837_63f5b5e8bde64ac286054fa631610ed4.pdf
    • https://cdn.shopify.com/s/files/1/0434/3329/6028/files/fekagakodukarivezux.pdf
    • https://cdn.shopify.com/s/files/1/0438/3863/6192/files/messianic_haggadah.pdf
    • https://cdn.shopify.com/s/files/1/0432/1250/5252/files/natusol.pdf
    • https://cdn.shopify.com/s/files/1/0431/9356/5342/files/crappie_fishing_report_table_rock_lake.pdf
    • https://static.usrfiles.com/ugd/b8c837_0c37399c1eb548f2be6e36137f614763.pdf
    • https://static.usrfiles.com/ugd/b8c837_2a61fc3bb1214983a4047278be7b03db.pdf
    • https://static.usrfiles.com/ugd/b8c837_3f434805ddda4e75bd6a79c4399aa167.pdf
    • https://static.usrfiles.com/ugd/868401_66d7840d59284b32971dea8e0f4b001b.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_off00005e84.bin
69a8f674fcc4b8c0f11a0108ef3b65e4cfc6760f1c004a25bc0b004bee0de5cb
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E84 5540 bytes
font_01_sfnt_off00007135.bin
1ca8a5fb5b64d59ad98cc83d8466702af5656620a685a0312cfa9534724557e0
pdf-font-stream PDF embedded font (sfnt) at offset 0x7135 10376 bytes