Malicious PDF — malware analysis report

Static analysis result for SHA-256 53f799fbc66d102c…

MALICIOUS

PDF

54.7 KB Created: 2020-08-30 20:30:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eb6b104220dadcbf1fa469e81d2cc5b7 SHA-1: 986d1ddaae5c55ede12ca9b407f5b0dd8eeed04d SHA-256: 53f799fbc66d102c2d211f365738bdbda3562bb2e01186a98a2a9e87b50d98cb
154 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to its inclusion of a redirector link pointing to ttraff.com, which is associated with malicious activity. Additionally, it contains a large number of embedded links, many of which point to shopify.com and static.usrfiles.com, forming a link farm. The ML classifier strongly indicated maliciousness. The document body appears to be obfuscated or corrupted, but the presence of the malicious URL is the primary indicator of compromise.

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=einthusan+jab+tak+hai+jaan
    • https://cdn.shopify.com/s/files/1/0440/5762/4726/files/payday_2_heisters.pdf
    • https://cdn.shopify.com/s/files/1/0432/8384/1190/files/25502176090.pdf
    • https://cdn.shopify.com/s/files/1/0433/7028/3166/files/austempering_process.pdf
    • https://static.usrfiles.com/ugd/451461_fd3bfba7a6ce444bb28a5fe7b9c0e4f1.pdf
    • https://static.usrfiles.com/ugd/b8c837_b72dee6326534a7fa73e2601425d7c25.pdf
    • https://static.usrfiles.com/ugd/e5a943_57c4d26477f644028c16df4165870d47.pdf
    • https://static.usrfiles.com/ugd/1be480_c87a8e3749f24df6a6e7e3ba9393dbc9.pdf
    • https://static.usrfiles.com/ugd/7f46b5_1128e1da047246cf8db7158fa1a59f07.pdf
    • https://static.usrfiles.com/ugd/b8c837_5c8b9c234fc9424180aa2cc9a37cbb81.pdf
    • https://static.usrfiles.com/ugd/b8c837_8f270386712642d7ab246af03b1606e4.pdf
    • https://static.usrfiles.com/ugd/b8c837_da61417200a94ceba3db15df1b75b394.pdf
    • https://cdn.shopify.com/s/files/1/0433/0808/9509/files/bisamevejavas.pdf
    • https://cdn.shopify.com/s/files/1/0439/0912/0152/files/91692502413.pdf
    • https://cdn.shopify.com/s/files/1/0437/4786/8826/files/71627458921.pdf
    • https://cdn.shopify.com/s/files/1/0439/9595/5358/files/30426295646.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
stream_005_off00009e78.bin
eb594ad0349b743c0f714429a5f38f98c9939462bf564982663129208c633846		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x9E78 20148 bytes
font_00_sfnt_off00006531.bin
e3599c663b7694c006e09a6647c44cfffd1717b177515a85153eebf4ee3d8846		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6531 4536 bytes
font_01_sfnt_off00007481.bin
a0048468ea2ebed91ebd072bedee71e60aa048cb6ac6bf29a93c312b134532ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7481 13444 bytes
font_03_sfnt_off0000bfaf.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBFAF 4324 bytes

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