Malicious PDF — malware analysis report

Static analysis result for SHA-256 02327a98a390d826…

MALICIOUS

PDF

45.6 KB Created: 2020-08-08 04:46:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2bf2fc134036ee696df20f52af684b33 SHA-1: 10c4d2baf22b34c82ba96634f10fff5a38d6b2b8 SHA-256: 02327a98a390d826ec6f9dc91a3301cdd37e7ca29ffd7a7f106090412a860438
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, identified as a link farm, with one link pointing to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/pify?keyword=menu+cetogenica+pdf, suggesting a lure to a malicious site. The primary goal appears to be directing users to a network of external links, likely for SEO manipulation or to serve further malicious content.

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=menu+cetogenica+pdf
    • http://files.nalinikrishnankutty.com/uploads/1/3/0/8/130874128/mewajuluxojuvafox.pdf
    • http://faxajap.hokubeauty.com/uploads/1/3/1/0/131070450/zosonisuj_xowamulez.pdf
    • http://pulepodip.revivapilates.com/uploads/1/3/1/0/131070374/4128119.pdf
    • http://files.holmeslove.com/uploads/1/3/2/6/132695546/aea165af7.pdf
    • http://jivunekid.spcwaterdistrict.com/uploads/1/3/1/6/131606248/5738724.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0429/0193/0143/files/folurodow.pdf
    • https://cdn.shopify.com/s/files/1/0430/7379/8298/files/gupezubomopu.pdf
    • https://cdn.shopify.com/s/files/1/0436/1145/5645/files/likofoxopilaligubilopax.pdf
    • https://cdn.shopify.com/s/files/1/0430/8038/4674/files/kugevujukusuluw.pdf
    • https://cdn.shopify.com/s/files/1/0432/8072/8224/files/sipazufusisagavid.pdf
    • https://cdn.shopify.com/s/files/1/0432/5936/3488/files/newolusisofosoridago.pdf
    • https://cdn.shopify.com/s/files/1/0435/5640/5411/files/zekipewedewut.pdf
    • https://cdn.shopify.com/s/files/1/0434/1448/7190/files/jigumewu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6200/9755/files/46420620761.pdf
    • https://cdn.shopify.com/s/files/1/0437/1084/1000/files/2013_chevy_cruze_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/2222/9397/files/skype_mood_editor.pdf
    • https://cdn.shopify.com/s/files/1/0434/0868/7269/files/9038702480.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_off00006742.bin
86c1c303e1b0275d11b69f34e609b1690d89237303d1232fadd6500c0844f6e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6742 4904 bytes
font_01_sfnt_off00007813.bin
a38b14098743fb49c6df4b1076cd07f6f2de4b5067ad30e27dc31b73851ee46f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7813 10304 bytes
font_02_sfnt_off00009b43.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B43 4324 bytes

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