Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a00a9d8b51a45e0…

MALICIOUS

PDF

36.5 KB Created: 2020-08-30 22:26:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ca2712387b604f7e81a6c7436e64f078 SHA-1: 00e81702baafa284f26faa0d72eb2775b71c1c9c SHA-256: 7a00a9d8b51a45e04d5ec453f4a828772a8f3af8585c4545b9ace71e89976874
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links, with at least one identified as a malicious redirector. The document body, though partially garbled, includes the URL 'https://ttraff.cc/wix?keyword=belirtke+tablosu+%25C3%25B6rnekleri', which is flagged as a malicious redirector. Additionally, the PDF exhibits characteristics of a link farm, with 22 external PDF links, suggesting an attempt to drive traffic to various sites, some of which may be malicious.

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/wix?keyword=belirtke+tablosu+%25C3%25B6rnekleri
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/7723/7920/files/aashiqui_2_movie_bestwap.pdf
    • https://cdn.shopify.com/s/files/1/0427/5198/3772/files/70950319734.pdf
    • https://cdn.shopify.com/s/files/1/0437/8574/8642/files/advertising_lecture_notes.pdf
    • https://cdn.shopify.com/s/files/1/0437/6051/7269/files/jofak.pdf
    • https://static.usrfiles.com/ugd/aef5b7_ea300219a8a84aafa9640990278146b2.pdf
    • https://static.usrfiles.com/ugd/98e298_45c39b88aed5429fbd99f4affef70d14.pdf
    • https://static.usrfiles.com/ugd/b8c837_0708e1db75234968bc8a88477c727e09.pdf
    • https://static.usrfiles.com/ugd/67e251_de41663b0bb94b96ba81fcfcd5e29783.pdf
    • https://static.usrfiles.com/ugd/b8c837_9f30953cf83342c593576e1d37ab3c74.pdf
    • https://static.usrfiles.com/ugd/5de1df_3443be3c8c1a4dcc97aed5f36b46a10f.pdf
    • https://static.usrfiles.com/ugd/b8c837_7474e173042e48d09a9aaf84ad0c5dcb.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f98.bin
26930dcc35ecc41c5d14c6bbdc8e39a03152b3a50c41bd1c1c3b2b3b4334d705
pdf-font-stream PDF embedded font (sfnt) at offset 0x4F98 5068 bytes
font_01_sfnt_off00006099.bin
6ce0bef281d385d7c399761aa2d32df51b58a20585980880fca37a2ed26021ac
pdf-font-stream PDF embedded font (sfnt) at offset 0x6099 11412 bytes