Malicious PDF — malware analysis report

Static analysis result for SHA-256 19414b04abc0a11b…

MALICIOUS

PDF

44.5 KB Created: 2020-08-23 09:43:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b589f1fd059c42d8ea8b2fb60053e035 SHA-1: 40adc8b68a00b665305cda787ef64d82d20c4130 SHA-256: 19414b04abc0a11b7e1d5c44d2aa37169248c5f31b1c647959b54ddb7cb862d8
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=blakely+clothing+size+guide'. Additionally, it exhibits characteristics of a PDF link farm, containing numerous external links, many of which are to Shopify domains but one critical link is to a suspicious redirector. The ML classifier also strongly flagged this PDF as 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.com/pify?keyword=blakely+clothing+size+guide
    • http://files.divorcecoachingandconsulting.com/uploads/1/3/0/8/130874518/bejam-soselovorifat-tekumubobup-powidonuvewadar.pdf
    • http://files.praisenyc.com/uploads/1/3/0/7/130775639/9107135.pdf
    • http://files.thesouthmillschurch.com/uploads/1/3/2/7/132741144/pujoso.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/8131/0114/files/18776476097.pdf
    • https://cdn.shopify.com/s/files/1/0429/5920/8604/files/nuwimi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0994/1415/files/taxidopuna.pdf
    • https://cdn.shopify.com/s/files/1/0454/5898/1022/files/fun_facts_about_animals.pdf
    • https://cdn.shopify.com/s/files/1/0437/6435/1130/files/64872725905.pdf
    • https://cdn.shopify.com/s/files/1/0433/7061/0851/files/nujosawosasa.pdf
    • https://cdn.shopify.com/s/files/1/0437/1097/2053/files/75106633313.pdf
    • https://cdn.shopify.com/s/files/1/0429/1526/6713/files/jinomewekak.pdf
    • https://cdn.shopify.com/s/files/1/0439/2042/5115/files/carolina_diner_menu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1553/5774/files/resume_template_doc_free.pdf
    • https://cdn.shopify.com/s/files/1/0437/1965/5573/files/analgesic_definition.pdf
    • https://cdn.shopify.com/s/files/1/0427/5788/2022/files/zurifeminixuridol.pdf
    • https://cdn.shopify.com/s/files/1/0459/1249/0133/files/history_of_animal_tissue_culture.pdf
    • https://cdn.shopify.com/s/files/1/0431/7318/3645/files/jaxelekuziginide.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_off0000628a.bin
94d1b8c234325caf2ddba58ee30ceecb1df6aa061ca52a5562b6e6a4c2f5a1f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x628A 5252 bytes
font_01_sfnt_off0000746d.bin
43322dc093c8ba85a24e090fd8b1d0322789b5604f630cde718c094fbe072d72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x746D 9900 bytes
font_02_sfnt_off00009650.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9650 4324 bytes

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