Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dfec9f9a00c73e7…

MALICIOUS

PDF

38.3 KB Created: 2020-08-06 16:25:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ef75648b0354616fcf519b6422381aa1 SHA-1: 05e73a4e1dbcc046fedb1f7429819d38d6bd570b SHA-256: 1dfec9f9a00c73e78ca7ac2ca06f353ece8f8b8b1e603611470d6183fc8a9929
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a significant number of embedded links, with a critical heuristic firing for a malicious redirector. The majority of these links point to a large collection of PDFs hosted on Shopify, suggesting a link farm or SEO manipulation tactic. One of the embedded URLs, 'https://ttraff.com/pify?keyword=trasplante+haploidentico+de+medula+osea+pdf', is flagged as a known malicious redirector. The ML classifier also strongly indicated maliciousness.

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=trasplante+haploidentico+de+medula+osea+pdf
    • http://files.moderndayparablesrcf.com/uploads/1/3/0/7/130739510/zuragogina_zamuf_basurumawal.pdf
    • http://files.sassysewingandembroidery.com/uploads/1/3/1/4/131437061/tuvuzuj.pdf
    • http://files.wolfcitydesign.com/uploads/1/3/0/7/130740522/disojepa-zejifuvuv-godedoveda-kedame.pdf
    • http://zebawaf.personalbaggagestyle.com/uploads/1/3/2/6/132681233/1336104.pdf
    • http://files.revolutionyouth.ca/uploads/1/3/0/8/130813409/316222e.pdf
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/aleister_crowley_de_arte_magica.pdf
    • https://cdn.shopify.com/s/files/1/0429/8981/3909/files/67021534302.pdf
    • https://cdn.shopify.com/s/files/1/0433/7926/1590/files/rupiwodamejovakulapog.pdf
    • https://cdn.shopify.com/s/files/1/0429/6412/3814/files/arban_complete_method_trumpet.pdf
    • https://cdn.shopify.com/s/files/1/0434/1268/4967/files/graph_paper_background.pdf
    • https://cdn.shopify.com/s/files/1/0437/1880/3607/files/nisemize.pdf
    • https://cdn.shopify.com/s/files/1/0435/7462/4419/files/glencoe_pre_algebra_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0434/8346/3832/files/wixajawoti.pdf
    • https://cdn.shopify.com/s/files/1/0436/3767/0041/files/banekukitimu.pdf
    • https://cdn.shopify.com/s/files/1/0430/9313/1425/files/70053769682.pdf
    • https://cdn.shopify.com/s/files/1/0430/5806/9655/files/are_you_pondering_what_i_m_pondering.pdf
    • https://cdn.shopify.com/s/files/1/0435/8560/1695/files/10946738210.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005487.bin
74ccbcf14a0156c239bde8f6fdc827eca7a9b10e749594c7b00e891e739a8701		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5487 5344 bytes
font_01_sfnt_off00006680.bin
897254287233f9a81b2025cc18692bfac9fafa4e85f4844a8b601564f54ca23c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6680 10840 bytes

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