Malicious PDF — malware analysis report

Static analysis result for SHA-256 17e79db462e1ac05…

MALICIOUS

PDF

52.3 KB Created: 2020-08-29 02:03:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d60932633849c9be86cab01ed5ea4302 SHA-1: dffb9eb0c7a59d42a9c21a0ea9d97e448a70767a SHA-256: 17e79db462e1ac05fb98b120fefbab20d5c7fc301a527cf4d883e2b0f2ef6a7d
154 Risk Score

Malware Insights

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

The PDF contains embedded URLs, with one identified as a malicious redirector. The document body, though heavily obfuscated, appears to contain text related to betting tips, suggesting a lure. The presence of numerous external PDF links further indicates a link farm or redirection strategy, likely to distribute malicious content or phish for information.

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.ru/wix?keyword=pronostic+gratuit+turf.fr+tierce+2
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static.usrfiles.com/ugd/b8c837_bc4811e10edb45acbd096aa9428404c1.pdf
    • https://static.usrfiles.com/ugd/b8c837_efec9eb68e56477fb6a6a8eed6735244.pdf
    • https://static.usrfiles.com/ugd/b8c837_3bc455fa54b648b889bd93a03fbf31a3.pdf
    • https://static.usrfiles.com/ugd/b8c837_3583a24750774a0a90537facee6b04d2.pdf
    • https://static.usrfiles.com/ugd/b8c837_fceb8642e2314bf49b72c69d942b1f56.pdf
    • https://cdn.shopify.com/s/files/1/0433/3764/6245/files/pegitupamowavisagepus.pdf
    • https://cdn.shopify.com/s/files/1/0428/9275/5111/files/danizasojukek.pdf
    • https://static.usrfiles.com/ugd/b8c837_e0c3c45da79249788ec0ee31b601bc21.pdf
    • https://static.usrfiles.com/ugd/b8c837_68914df9eb4a44ecb18c928ff4647439.pdf
    • https://static.usrfiles.com/ugd/b8c837_368b52a6506f474486ead39902221bed.pdf
    • https://static.usrfiles.com/ugd/b8c837_1ac2ca8ee76e48549110c3ad3d14fc59.pdf
    • https://static.usrfiles.com/ugd/b8c837_7547b62a960b4f7ba97de62b12829a1d.pdf
    • https://cdn.shopify.com/s/files/1/0438/9902/7611/files/39459002385.pdf
    • https://cdn.shopify.com/s/files/1/0430/2284/4067/files/64656517584.pdf
    • https://cdn.shopify.com/s/files/1/0436/1994/2563/files/90621756254.pdf
    • https://cdn.shopify.com/s/files/1/0431/9870/9917/files/hallelujah_leonard_cohen_chords.pdf
    • https://cdn.shopify.com/s/files/1/0432/1135/8372/files/towegemi.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008071.bin
1b1fe49532842da8ecd61d77b36db9913382c564f9bcbe99009a2bad109b4f57		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8071 5064 bytes
font_01_sfnt_off000091b8.bin
e3d984a83163bd8264a1e2fca225e6961c9ede9cf60e84ab2a7265b8ca1c774c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91B8 10472 bytes
font_02_sfnt_off0000b56c.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB56C 4324 bytes

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