Malicious PDF — malware analysis report

Static analysis result for SHA-256 7375b924335854a9…

MALICIOUS

PDF

120.9 KB Created: 2020-08-29 20:56:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d80bc8424f00cbb66e880fb062944cf5 SHA-1: 33b7d166c0372345bb26327b5eae0e6197738478 SHA-256: 7375b924335854a9ba5cdbaff464944f4098166af9c8f0cc68713dff4bef165a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text that, when combined with the heuristic SE_ADVANCE_FEE_SCAM_LURE, strongly suggests an advance-fee scam. The presence of a malicious redirector indicates an attempt to lead the user to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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/wix?keyword=chakra+frequencies+tantra+of+sound+p
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://static.usrfiles.com/ugd/b8c837_a79300031340454fa1555e5f191688e0.pdf
    • https://static.usrfiles.com/ugd/b8c837_c59f01c313944bd89b6c6d5c60b9c983.pdf
    • https://static.usrfiles.com/ugd/b8c837_e0b44587f97740989ac55e2308e7d60f.pdf
    • https://static.usrfiles.com/ugd/1cfe37_0504899e05cc4c9b9e6597bceca9f108.pdf
    • https://static.usrfiles.com/ugd/b8c837_cc7a0b5618484dca89d0d83502fb0d85.pdf
    • https://static.usrfiles.com/ugd/c0b427_d196227efc704a229443c5174420abe5.pdf
    • https://static.usrfiles.com/ugd/b8c837_dde8d2c32830414096a45273f73a64fa.pdf
    • https://static.usrfiles.com/ugd/b8c837_29722c605d6244a189447036c365eea1.pdf
    • https://static.usrfiles.com/ugd/b8c837_3a246bcdc79f4f99b04197eceba0ca09.pdf
    • https://static.usrfiles.com/ugd/b5aed9_8eff698678bf477b89c113903a22dcee.pdf
    • https://static.usrfiles.com/ugd/b8c837_cacb5afa5566409e81e4643a084c041c.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/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00016baf.bin
f504209d0204c45221fde207c7eca0c788eb0fc81e0a5ac195fab1972cea3890		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16BAF 3692 bytes
font_01_sfnt_off000178d7.bin
aea3fb61deaab49781482fe0bd265fd035e0fe5a394a1d70965b809f5b9f5544		 pdf-font-stream PDF embedded font (sfnt) at offset 0x178D7 5304 bytes
font_02_sfnt_off00018ad7.bin
d044a2c8fa0edaad6592c88ca9c6734b795e7ec5155eb8c06d740ac39b39ae01		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18AD7 11640 bytes
font_03_sfnt_off0001b295.bin
848c8307c24b6d0ce9612f09e0cdd2540ce09c1906deac1ed81dd03601b0b910		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B295 16236 bytes
font_04_sfnt_off0001c833.bin
d0731807bf984727e06600ab1bf55660f456c3ce3c6a0950f96d7698594f2f49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1C833 3244 bytes

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