Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d643a35b0d78fb1…

MALICIOUS

PDF

39.1 KB Created: 2020-08-31 05:43:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e974e01550b1efa778cadbef5cb8863b SHA-1: 167dfa4003c108504671069caabb3cdd1167cc88 SHA-256: 9d643a35b0d78fb1afdfb570934e3a924a39c3dfa6fb72867e3cb92f1269a215
162 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body, though malformed, contains text related to a 'whirlpool duet manual release ring' and the malicious URL 'https://ttraff.cc/wix?keyword=whirlpool+duet+manual+release+ring'. This suggests a lure to a phishing or malware distribution site. The heuristic 'SE_MFA_LURE' further indicates a potential credential harvesting attempt.

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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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=whirlpool+duet+manual+release+ring
    • https://static.usrfiles.com/ugd/b8c837_0ca8703a607c41c7a4bd67076a8dcb10.pdf
    • https://static.usrfiles.com/ugd/b8c837_5c6a4457b9b645ce8099dee94f1ce2a6.pdf
    • https://static.usrfiles.com/ugd/3dd68e_5201492919e7486c9e57a0b4ba8b160e.pdf
    • https://static.usrfiles.com/ugd/e2c6c1_93094e15762d47c19092bbd01de40b50.pdf
    • https://static.usrfiles.com/ugd/b8c837_94f947be39e6411f9dfd343c436112b2.pdf
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/brachioradialis_strain_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0438/6249/1286/files/62971307135.pdf
    • https://static.usrfiles.com/ugd/7ea8bb_b525c66729ef41f9a3a9da4de46de78d.pdf
    • https://static.usrfiles.com/ugd/b4a829_31b3aa3dc393438fa56839049d7e8dd0.pdf
    • https://static.usrfiles.com/ugd/f967ac_5d50f0976a9349cc9cfe7635395e0f50.pdf
    • https://static.usrfiles.com/ugd/6cfc61_98a851ad39264dfc93a7bc849ed69721.pdf
    • https://static.usrfiles.com/ugd/b8c837_8e081f05ea1440baa367ae5b67838ba9.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_off00005abb.bin
396b5423a8c4499ccf34db8104c5c61c7b3bca96a75f2fd5bb284446dffb6bf3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5ABB 5384 bytes
font_01_sfnt_off00006cea.bin
67c400178e7f690b80c9b81c880948a5625114b111ad4c3bca1e8664c4e3fd76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CEA 10132 bytes

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