Malicious PDF — malware analysis report

Static analysis result for SHA-256 577a365753433b6c…

MALICIOUS

PDF

40.2 KB Created: 2020-08-30 10:52:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 32fa0a2a5ff7818487a3a3eff2ab2f00 SHA-1: 49d2567e0f289fdd9cac503fb8fa04b0cb113163 SHA-256: 577a365753433b6c6256f0155838bcf656d2ee78677f0adb1ad06da1d61d3eda
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a PDF link farm. One of these links, https://ttraff.link/wix?keyword=insan%25C4%25B1+tan%25C4%25B1ma+sanat%25C4%25B1, points to known malicious redirector infrastructure. The primary purpose appears to be SEO manipulation or redirecting users to potentially harmful content, rather than direct execution of malware from the PDF itself.

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.link/wix?keyword=insan%25C4%25B1+tan%25C4%25B1ma+sanat%25C4%25B1
    • https://static.usrfiles.com/ugd/7baf93_23a3e4deb6704bc3a182e137b83b7f7f.pdf
    • https://static.usrfiles.com/ugd/538d67_d81e0a13a10142929cfb33e4db0c1f61.pdf
    • https://static.usrfiles.com/ugd/1d64af_b0ad367deee94e558c3232e0e2e89799.pdf
    • https://cdn.shopify.com/s/files/1/0438/8637/9160/files/pulufirajawobadixijivasas.pdf
    • https://cdn.shopify.com/s/files/1/0437/6500/6494/files/ccnp_route_300-101_dumps.pdf
    • https://static.usrfiles.com/ugd/ce5d00_66cd6e4d254144f1af456c2a42371566.pdf
    • https://static.usrfiles.com/ugd/b8c837_45c65d7afac4466f8a70de0837cfa42f.pdf
    • https://static.usrfiles.com/ugd/cafc24_cc7cc4ccd7034d5d82ade522b64eaa44.pdf
    • https://static.usrfiles.com/ugd/93c935_563407c0e6564c64b0a65f3b8c38f4ee.pdf
    • https://static.usrfiles.com/ugd/2f3ac6_f85eb8e023b2474e8e2d40f714358307.pdf
    • https://cdn.shopify.com/s/files/1/0440/6129/4757/files/17723332456.pdf
    • https://cdn.shopify.com/s/files/1/0431/5627/5362/files/tezopiwefafune.pdf
    • https://cdn.shopify.com/s/files/1/0432/8125/2508/files/45216666587.pdf
    • https://cdn.shopify.com/s/files/1/0429/3702/4668/files/rodafawifidi.pdf
    • https://cdn.shopify.com/s/files/1/0459/2192/7319/files/ct_file_bng_nitro.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_off00005f9b.bin
292cf54276ecf139185073b85c90a9b29371353a024e93667b2006f31337a068
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F9B 4672 bytes
font_01_sfnt_off00006f63.bin
59c9d8046a1f9129e305e2c11415c37c1c284a813a8d955ded5df04c9837a2b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F63 11012 bytes