Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fc18024b374ebee…

MALICIOUS

PDF

59.0 KB Created: 2020-08-11 04:02:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c6725429fea996da1aea44461629e2db SHA-1: 27699026cdd93d49102d9b4b0945ed74b7399f20 SHA-256: 5fc18024b374ebeec7041d7983d88b1e3529c32122330ce2175d7a5008baebaf
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final destination of the malicious payload. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to PDF files, suggesting an attempt to manipulate search engine results or distribute further malicious content. The ML classifier 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.cc/pify?keyword=engineering+drawing+handbook+hb7+pdf
    • http://files.qualitycollectibletreasures.com/uploads/1/3/1/1/131164425/2472437.pdf
    • http://files.narcabuserecoverysupport.com/uploads/1/3/1/6/131606813/pivira.pdf
    • http://files.abigailgallagherportfolio.org/uploads/1/3/1/4/131406610/b5ce0.pdf
    • http://files.mingusperformingarts.com/uploads/1/3/2/8/132814930/8037984.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0439/3995/4856/files/algebraic_long_division_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0431/0165/1105/files/pogo_games_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/9052/5849/files/47243032529.pdf
    • https://cdn.shopify.com/s/files/1/0430/7435/5351/files/10704353223.pdf
    • https://cdn.shopify.com/s/files/1/0431/4162/8053/files/2846997871.pdf
    • https://cdn.shopify.com/s/files/1/0432/3131/4077/files/57429869395.pdf
    • https://cdn.shopify.com/s/files/1/0436/4910/6073/files/94786279879.pdf
    • https://cdn.shopify.com/s/files/1/0435/5109/6993/files/38615157046.pdf
    • https://cdn.shopify.com/s/files/1/0430/5531/7149/files/network_access_control.pdf
    • https://cdn.shopify.com/s/files/1/0431/7341/3028/files/wujoxatafozigolatusisem.pdf
    • https://cdn.shopify.com/s/files/1/0437/1080/8217/files/bisef.pdf
    • https://cdn.shopify.com/s/files/1/0431/8153/9489/files/68668214918.pdf
    • https://cdn.shopify.com/s/files/1/0431/8196/5461/files/gizej.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068f8.bin
fa8acb4a4931a674f6990f75f9f8d5e7034b7b299c8788300dfae8ff7e102bc3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68F8 15020 bytes
font_01_sfnt_off0000991e.bin
ba69e85841181ae8d3bdb1478cdaf4e10de409ffeaeb625ed18a0b86dd3bd238		 pdf-font-stream PDF embedded font (sfnt) at offset 0x991E 5136 bytes
font_02_sfnt_off0000aa94.bin
3b30a58f84af5bb478503b3a53de93606546dab970b47631429a333304f80e26		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAA94 10312 bytes
font_03_sfnt_off0000cddb.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCDDB 4324 bytes

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