Malicious PDF — malware analysis report

Static analysis result for SHA-256 07ddc957b70ad421…

MALICIOUS

PDF

33.6 KB Created: 2020-08-31 16:39:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2c1e829c4597adf0744ed39ccdc633e0 SHA-1: 9ff96fac11b7c1faf609bed1d696a15435ba7c1c SHA-256: 07ddc957b70ad421344fef16fb20c7c869b454ac0f1b87d5af8704fb49147c63
154 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, with the primary link directing to a known malicious redirector. The document body text and embedded links suggest a lure related to a popular movie, likely to entice users to click through. 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/wix?keyword=moana+cartoon+movie+in+tamil+free
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0438/5108/8032/files/iterate_through_map_c.pdf
    • https://cdn.shopify.com/s/files/1/0436/9829/0856/files/lopisumeni.pdf
    • https://cdn.shopify.com/s/files/1/0433/7143/0044/files/46855921.pdf
    • https://cdn.shopify.com/s/files/1/0447/3192/4629/files/physical_chemistry_chang.pdf
    • https://cdn.shopify.com/s/files/1/0441/2263/6440/files/goal_getter_order_card.pdf
    • https://static.usrfiles.com/ugd/ea78e0_87cd4b83274a47a2a1ed66b486830569.pdf
    • https://cdn.shopify.com/s/files/1/0427/9782/6207/files/vudodevat.pdf
    • https://cdn.shopify.com/s/files/1/0430/8339/9329/files/misavaxokusane.pdf
    • https://cdn.shopify.com/s/files/1/0461/6948/9560/files/intermediate_accounting_2_millan_2019_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0433/3345/1944/files/53461332311.pdf
    • https://cdn.shopify.com/s/files/1/0429/2499/8819/files/nozopo.pdf
    • https://cdn.shopify.com/s/files/1/0433/5039/2984/files/81615402910.pdf
    • https://cdn.shopify.com/s/files/1/0432/1030/9787/files/58582814834.pdf
    • https://cdn.shopify.com/s/files/1/0459/5800/4895/files/bozawisawumujibibukotuta.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_off000046f8.bin
ddbda7474fde8d4f51731e5d996c0eec5e99672c09657a4dc433a8fab6762e49
pdf-font-stream PDF embedded font (sfnt) at offset 0x46F8 4912 bytes
font_01_sfnt_off000057ae.bin
ebcd03dbcf47a0ce141172eb0fdfc1dbec4fcd6f2d9c9e5e189f4ff6d50774ef
pdf-font-stream PDF embedded font (sfnt) at offset 0x57AE 9944 bytes