Malicious PDF — malware analysis report

Static analysis result for SHA-256 120d36b2cad2c879…

MALICIOUS

PDF

139.1 KB Created: 2020-08-29 18:10:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff27940fca355bca463da7e56bcbb515 SHA-1: ebe02423919206a6fa10578af61d5ce618b60047 SHA-256: 120d36b2cad2c879509524c6b2b727200a3f3785c6166fdbc8244fbccf5f217e
154 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to malicious infrastructure. It also exhibits PDF_SEO_LINK_FARM behavior, containing numerous links to other PDFs. The embedded URL 'https://ttraff.cc/wix?keyword=amy+big+bang+theory' is a primary indicator of malicious intent, likely serving as a redirector to further malicious content. No scripts were extracted, but the PDF structure itself is used to host and distribute links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=amy+big+bang+theory
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0439/4686/8891/files/vituzeragojulovojemur.pdf
    • https://cdn.shopify.com/s/files/1/0431/3926/8769/files/babul_movie_video_song.pdf
    • https://cdn.shopify.com/s/files/1/0435/9349/8787/files/principles_of_business_information_systems_3rd_edition_2020.pdf
    • https://cdn.shopify.com/s/files/1/0435/5588/1111/files/xamotafebofilesufusake.pdf
    • https://static.usrfiles.com/ugd/b8c837_52c0aabd9ede4b29a95bcca3a3c3fed3.pdf
    • https://static.usrfiles.com/ugd/b8c837_3d6b61e60e3f448f8a4c378df59dd932.pdf
    • https://static.usrfiles.com/ugd/6da380_7a024b25b11a4decbd775bbf99abf334.pdf
    • https://static.usrfiles.com/ugd/696b8a_a116c240a5544621916d3cd17659d5db.pdf
    • https://static.usrfiles.com/ugd/89064d_f1ff0ee208ab490e816189c1940d14f5.pdf
    • https://cdn.shopify.com/s/files/1/0433/5190/0310/files/lurujenazora.pdf
    • https://cdn.shopify.com/s/files/1/0432/6624/4764/files/access_control_list.pdf
    • https://cdn.shopify.com/s/files/1/0432/7315/8806/files/kosuxakeb.pdf
    • https://cdn.shopify.com/s/files/1/0435/0777/7700/files/63010010740.pdf
    • https://cdn.shopify.com/s/files/1/0429/2509/7126/files/89244891158.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_off0001dc6c.bin
2c3fb0c5d8f61767d90eb66df5694484535e985b89b994f6382307edf10b575d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1DC6C 4908 bytes
font_01_sfnt_off0001eced.bin
76c2b2d2ca11dff95bc39f76d482cd4ac4286dd6702c557b18225d411cc60edb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1ECED 10352 bytes
font_02_sfnt_off00021060.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x21060 4324 bytes

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