Malicious PDF — malware analysis report

Static analysis result for SHA-256 575f820afa8c723c…

MALICIOUS

PDF

51.3 KB Created: 2020-09-02 00:30:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 24e46293b801087f2c9c9697f34e7e51 SHA-1: 16ac5ead7c3d968fa3f43910ea113204a0b0b8ec SHA-256: 575f820afa8c723c007c7c1ea37949cf714dd4f7091b76f58765bce4f3584d05
154 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.club/wix?keyword=new+att+punjabi+couple+shayari+pic'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous links, many of which point to Shopify domains. The document body, though heavily obfuscated, contains the same redirector URL and a Shopify URL, suggesting a coordinated effort to drive traffic to malicious infrastructure, possibly for phishing or malware distribution.

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=new+att+punjabi+couple+shayari+pic
    • https://cdn.shopify.com/s/files/1/0432/9196/7652/files/70466451506.pdf
    • https://cdn.shopify.com/s/files/1/0438/5737/9488/files/bajomudijedefiwu.pdf
    • https://cdn.shopify.com/s/files/1/0433/1218/5499/files/video_er_apk_for_jio_phone.pdf
    • https://cdn.shopify.com/s/files/1/0435/5565/1743/files/multiply_fractions_word_problem_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/0063/5290/files/70304727594.pdf
    • https://cdn.shopify.com/s/files/1/0428/2525/3023/files/contrato_de_arrendamiento_minerva.pdf
    • https://cdn.shopify.com/s/files/1/0432/3924/3944/files/pujibododebebebadexit.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51108684678.pdf
    • https://static.usrfiles.com/ugd/7041e4_61296cbe6455433bb59a66b0c7bd8ba0.pdf
    • https://static.usrfiles.com/ugd/b8c837_11734de3b77c411581461eb84533a23e.pdf
    • https://static.usrfiles.com/ugd/b8c837_9c6230a38605477197fdd2c6bfb057e7.pdf
    • https://static.usrfiles.com/ugd/b8c837_6d8a2d61ca7443adb6fc1a05c5d2f4b2.pdf
    • https://static.usrfiles.com/ugd/73c254_57490338276e468db35ff38a39a0520b.pdf
    • https://static.usrfiles.com/ugd/23b571_609e71a1a603478ea047567fe3d8a257.pdf
    • https://static.usrfiles.com/ugd/dd4472_e8aa61f82c15410dbcf0516e9c84df5c.pdf
    • https://static.usrfiles.com/ugd/82e28d_1187e6b360634665a0ad76d7b8b0c737.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000053d3.bin
a8f5b4df5ef7858fbf4d2c7d814c83609ef10525c60223f30213d7d43e228f50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53D3 5400 bytes
font_01_sfnt_off00006639.bin
5fe65712c4429ac2b4df1288e8d4975d59799dc893f98192e75948bb03f9b323		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6639 5716 bytes
font_02_sfnt_off00007a72.bin
5af23202743fe0139f198e78e6b58e3377da861a0e7bc59ff52a1de1bf7ae855		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A72 13712 bytes
font_03_sfnt_off0000a647.bin
07e8acaccea36dcc65144c7c2ea18555ce85797d0e123adeab55fd02aa6ac338		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA647 18328 bytes

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