Malicious PDF — malware analysis report

Static analysis result for SHA-256 440cf25b0ae4e1e0…

MALICIOUS

PDF

45.9 KB Created: 2020-08-06 14:51:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dd2341f84a5510544fe28c2c2908d76c SHA-1: a5af55eb2fa945b43a66d5906c1fc134e7933511 SHA-256: 440cf25b0ae4e1e0a70c38df4ae2ba47d28de87c41b5ad416f3e361614a68031
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a high number of embedded links, many pointing to external resources, a common tactic for SEO poisoning or link farms. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is likely the primary malicious payload delivery mechanism. The document body, though heavily obfuscated, contains the URL that triggered the malicious redirector heuristic, suggesting a social engineering lure related to the Theranos 'bad blood' scandal.

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=bad+blood+pdf+theranos
    • http://files.sushi-logos.com/uploads/1/3/1/6/131637656/denifiwofe.pdf
    • http://xojod.everythingdmv.com/uploads/1/3/0/7/130740510/dunulu_selubutelumi.pdf
    • http://files.continuingeducationwnc.org/uploads/1/3/1/6/131606060/6633724.pdf
    • http://files.shalomlife.org/uploads/1/3/2/6/132695511/jubalaxizebufaf_nerokimifaloxis.pdf
    • https://cdn.shopify.com/s/files/1/0436/6372/0613/files/retencion_restos_placentarios.pdf
    • https://cdn.shopify.com/s/files/1/0434/3005/2005/files/history_of_kashmir_in_urdu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0006/9285/files/gowezanapelarosigobejiso.pdf
    • https://cdn.shopify.com/s/files/1/0431/7623/1063/files/duralofureruvitufu.pdf
    • https://cdn.shopify.com/s/files/1/0436/0844/0995/files/werajurab.pdf
    • https://cdn.shopify.com/s/files/1/0435/6512/1695/files/comment_fusionner_plusieurs_avec_foxit_reader.pdf
    • https://cdn.shopify.com/s/files/1/0432/7754/9726/files/37518860573.pdf
    • https://cdn.shopify.com/s/files/1/0435/5905/9605/files/perception_deception.pdf
    • https://cdn.shopify.com/s/files/1/0439/4106/8958/files/gezamibotam.pdf
    • https://cdn.shopify.com/s/files/1/0431/1826/4469/files/679352823.pdf
    • https://cdn.shopify.com/s/files/1/0437/3492/5463/files/9646705586.pdf
    • https://cdn.shopify.com/s/files/1/0434/2900/3416/files/49243564259.pdf
    • https://cdn.shopify.com/s/files/1/0431/2917/6232/files/11561063936.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_off0000755b.bin
9f3940e08ede4aa6c07d93ad99648b2a0daaa36dcbdce9ae00fd97aaa64d036f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x755B 5316 bytes
font_01_sfnt_off00008762.bin
6d20342efcb187fe8a9c4b0a9953ffd792c4c1dab4e335dea67e5da8d1b0cd62		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8762 10420 bytes

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