Malicious PDF — malware analysis report

Static analysis result for SHA-256 932137d99de7d421…

MALICIOUS

PDF

44.7 KB Created: 2020-08-11 09:06:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 27fdf3b823d958c3732300139e32c4d9 SHA-1: 337e78d8c21d16adc0404c2c9bb9c74918656c06 SHA-256: 932137d99de7d421ac1c04d1972a2ed3facc22a7713d19fdb15276c2b1b473fd
154 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO poisoning attempt. One critical heuristic firing indicates a link to known malicious redirector infrastructure at ttraff.com. The document body, though partially corrupted, contains the title 'Causing death and saving lives pdf' and the malicious URL, reinforcing the lure. No scripts were extracted, but the primary attack vector appears to be directing users to malicious or deceptive content via embedded links.

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=causing+death+and+saving+lives+pdf
    • http://files.bumpusband.com/uploads/1/3/1/4/131437680/5434429.pdf
    • http://juwiwilir.tobagoplants.com/uploads/1/3/0/8/130814788/zuruw-vutisi.pdf
    • http://gepawogo.dianedailydose.com/uploads/1/3/0/7/130775735/wadab_pikigatum_larozipi_savomezuniva.pdf
    • https://cdn.shopify.com/s/files/1/0429/3446/8774/files/sujexoj.pdf
    • https://cdn.shopify.com/s/files/1/0432/8508/6364/files/modajowugivasozuzu.pdf
    • https://cdn.shopify.com/s/files/1/0428/0342/9535/files/donufitopikowuzas.pdf
    • https://cdn.shopify.com/s/files/1/0431/1996/8417/files/great_expectations_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/5085/9670/files/qcm_atomistique_paces.pdf
    • https://cdn.shopify.com/s/files/1/0434/9516/2022/files/18968652111.pdf
    • https://cdn.shopify.com/s/files/1/0428/6647/5164/files/oedema_in_pregnancy.pdf
    • https://cdn.shopify.com/s/files/1/0432/4976/2459/files/2011_chevy_equinox_repair_manual_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/6717/1223/files/82388719983.pdf
    • https://cdn.shopify.com/s/files/1/0429/5272/0543/files/red_flag_emoji.pdf
    • https://cdn.shopify.com/s/files/1/0429/7929/5385/files/xejuxutebedasanolujodife.pdf
    • https://cdn.shopify.com/s/files/1/0432/2626/7806/files/telekinesis_power_secrets.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_off00006f82.bin
ec7da1e1f2e8bca6177c72dd4365df39e4c432cf3d5b9397738b5cce642811b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F82 5172 bytes
font_01_sfnt_off00008123.bin
de89f1ae213776141238db6f4b014a5b7c18aef40d801985f2a986d6c237f32f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8123 10272 bytes

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