Malicious PDF — malware analysis report

Static analysis result for SHA-256 06b63fdb831c1c07…

MALICIOUS

PDF

38.3 KB Created: 2020-08-31 11:58:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 459de3590e698827b88d742e60fadfdb SHA-1: 317dab7be37f3248c0c4ae75b4f1c5523023e1d3 SHA-256: 06b63fdb831c1c0713fbefc19556b64b75fdc6c3bca2b90645ce18269a1c056c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to external PDF files, forming a link farm. One of the primary links redirects to a known malicious infrastructure at 'ttraff.cc'. This suggests an attempt to lure users to malicious content, likely for phishing or malware distribution.

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=lerys+memorial+institute
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static.usrfiles.com/ugd/086daf_9fc4eb4a4dc942f79b925b5e568dfaf7.pdf
    • https://static.usrfiles.com/ugd/696b8a_fca2fd696709473caa0bc383c4233acf.pdf
    • https://static.usrfiles.com/ugd/b972d5_f9a7571682054999aa88fc2a9130df5a.pdf
    • https://static.usrfiles.com/ugd/df4650_b316061c4124472cbba5fa5e999c2f21.pdf
    • https://static.usrfiles.com/ugd/906e9f_79e8438635d9490b8255817d65c2694c.pdf
    • https://cdn.shopify.com/s/files/1/0431/5850/3590/files/8238355537.pdf
    • https://cdn.shopify.com/s/files/1/0438/6547/3189/files/wafixunini.pdf
    • https://cdn.shopify.com/s/files/1/0438/1248/7325/files/foxulijubekafudo.pdf
    • https://cdn.shopify.com/s/files/1/0433/8896/0933/files/49168605032.pdf
    • https://cdn.shopify.com/s/files/1/0431/3920/3229/files/synthesis_of_inorganic_nanomaterials.pdf
    • https://cdn.shopify.com/s/files/1/0429/3358/4035/files/1962796208.pdf
    • https://cdn.shopify.com/s/files/1/0434/1035/8439/files/68747195550.pdf
    • https://cdn.shopify.com/s/files/1/0431/7141/4173/files/xifuwosofebel.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_off00004b13.bin
47bd690dcff576022e654d4b59a85b75e2bf5362fff60f5385abb7acb1015666
pdf-font-stream PDF embedded font (sfnt) at offset 0x4B13 4756 bytes
font_01_sfnt_off00005b26.bin
85787763dd7a1cb16e84850ddefbdd9810f38951dd230f920a890de6c119ac1a
pdf-font-stream PDF embedded font (sfnt) at offset 0x5B26 10284 bytes
font_02_sfnt_off00007e52.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E52 4324 bytes