Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dbac800ed250555…

MALICIOUS

PDF

44.4 KB Created: 2020-08-31 03:24:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f74f1961afcec2f52f67a7dc42f2a343 SHA-1: e70d8c42cc692a2d793b50e32720c35a34e7392f SHA-256: 2dbac800ed250555d4694307bd298dc29d610cb46adedf3ad8439deb04fd5614
152 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, https://ttraff.club/wix?keyword=otterbox+defender+serial+number+location, is identified as a malicious redirector. The document body, though heavily obfuscated, appears to contain text related to 'Otterbox defender serial number location', suggesting a lure to a phishing or scam page. The presence of numerous other links hosted on Shopify, while individually benign, contributes to a link farm tactic, likely to improve search engine ranking for malicious content.

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.club/wix?keyword=otterbox+defender+serial+number+location
    • http://bltlly.com/15wwr1
    • https://cdn.shopify.com/s/files/1/0433/4606/7621/files/60716238099.pdf
    • https://cdn.shopify.com/s/files/1/0428/6542/6598/files/aetna_better_health_reconsideration_form_florida.pdf
    • https://cdn.shopify.com/s/files/1/0427/7708/4070/files/ximugizugebepefuze.pdf
    • https://cdn.shopify.com/s/files/1/0432/0998/2107/files/vubave.pdf
    • https://cdn.shopify.com/s/files/1/0438/7926/8520/files/panasonic_aw_rp50n.pdf
    • https://cdn.shopify.com/s/files/1/0450/5393/5768/files/bedesijipiligu.pdf
    • https://cdn.shopify.com/s/files/1/0428/4959/9651/files/dainik_jagran_allahabad_news_paper.pdf
    • https://cdn.shopify.com/s/files/1/0433/9607/1589/files/pelaxixofesesuzosej.pdf
    • https://cdn.shopify.com/s/files/1/0438/1851/6637/files/factorization_of_quadratic_equation.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tugerivedisabuv.pdf
    • https://static.usrfiles.com/ugd/5438e3_7e0d067402d440c5ac888d4492759070.pdf
    • https://static.usrfiles.com/ugd/97aff7_62de023c9ae443e9b5887bbd6030b9c9.pdf
    • https://static.usrfiles.com/ugd/4d935e_592e6f935c90463295a0d690a4245ad4.pdf
    • https://static.usrfiles.com/ugd/b8c837_bcc0cc3b466a48cba847300606ae3712.pdf
    • https://static.usrfiles.com/ugd/ad2ade_2fbfddfaa6564d0a8ebc5fd74e2ef59f.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_off00006d97.bin
75c14bbd599fa2dd701a47f6205eeb3155efe77d74ce1178b0a6ec78b6dde415		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D97 5404 bytes
font_01_sfnt_off00007fe0.bin
0060306bb64e0f1cd9c95affc5d5694ca28c2a6902d3f9c7fc61d4d26ed96fab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FE0 10828 bytes

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