Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c11c470eb1bd958…

MALICIOUS

PDF

59.7 KB Created: 2020-08-20 06:19:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6846ff6768174620bee87313e02cc16c SHA-1: 37dfdd28030fd135aef4edfb3e96f378c890226e SHA-256: 0c11c470eb1bd958a555a9aa70c3a8eab16e4a0db172afc1b2b80518b38165a7
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating it's part of a link farm. One prominent link, 'https://ttraff.cc/pify?keyword=bolted+joint+engineering+pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary purpose is to redirect users to malicious infrastructure. The presence of many shopify.com links, some benign and some unknown, further supports the link farm hypothesis.

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=bolted+joint+engineering+pdf
    • http://files.designstationdiy.com/uploads/1/3/1/3/131379477/sulanotuzabuwug.pdf
    • http://files.mandarin-garden.co.uk/uploads/1/3/2/8/132816195/kaxuwev_ridor.pdf
    • http://pasunite.cardsforbravery.com/uploads/1/3/0/8/130814788/lizogukewubetedom.pdf
    • http://files.juliedascoli.com/uploads/1/3/1/8/131856743/ece89dd30cb0f3c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0452/0479/9639/files/castrol_magnatec_5w40_a3_b4.pdf
    • https://cdn.shopify.com/s/files/1/0434/4102/9276/files/dorimenewududezasijefopa.pdf
    • https://cdn.shopify.com/s/files/1/0433/7414/9793/files/13471166135.pdf
    • https://cdn.shopify.com/s/files/1/0435/1823/0688/files/vudokivebosokekipukatapis.pdf
    • https://cdn.shopify.com/s/files/1/0447/7953/6533/files/medical_dictionary_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/0453/4692/files/zoology_books_for_bsc_part_1_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/psychology_ciccarelli_4th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0429/9977/5381/files/74437004368.pdf
    • https://cdn.shopify.com/s/files/1/0435/9618/5763/files/el_rey_arturo_ylos_caballeros_de_la_mesa_redonda.pdf
    • https://cdn.shopify.com/s/files/1/0429/4865/7318/files/siwem.pdf
    • https://cdn.shopify.com/s/files/1/0437/1814/8247/files/android_butterknife_oncheckedchanged_example.pdf
    • https://cdn.shopify.com/s/files/1/0432/1378/3199/files/warcraft_3_nocd_crack.pdf
    • https://cdn.shopify.com/s/files/1/0435/4811/5096/files/cisco_firepower_2100_licensing_guide.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_off0000ad6b.bin
9943d7087e04e627cc985e404d3adbd804b1fc711996dd4b1414e956ad6055ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAD6B 4944 bytes
font_01_sfnt_off0000be59.bin
10e681d0c2dc1c64e540d3c7497b3b488d0ea0b7cbb53e37f85f8e6136553455		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBE59 10452 bytes

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