Malicious PDF — malware analysis report

Static analysis result for SHA-256 e06b5c77d23b5bf1…

MALICIOUS

PDF

44.2 KB Created: 2020-08-17 02:49:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f4a614f4bea3a2b2579af60f63e9e4fd SHA-1: e2888f0be2bd661a04b9efd928c2209b62b81d91 SHA-256: e06b5c77d23b5bf15f8414bbb4aa2c0ef275894aec5d432bc5dc3d94f65e7521
152 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=cd+cassiane+mar+vermelho'. Additionally, it features a large number of embedded PDF links, many hosted on cdn.shopify.com, indicating a potential link farm or SEO abuse strategy. No scripts were extracted, and the document body is heavily obfuscated, limiting further analysis of the immediate user-facing 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.com/pify?keyword=cd+cassiane+mar+vermelho
    • http://files.markalanbabcock.com/uploads/1/3/1/3/131379343/legasu.pdf
    • http://files.fencestile.com/uploads/1/3/2/6/132682994/savediwodavep.pdf
    • http://files.constanzohistory.com/uploads/1/3/1/8/131858044/8904037.pdf
    • http://mukeviwe.educatepa.com/uploads/1/3/0/7/130775062/wifeputoxogu_rubumokebuk.pdf
    • https://cdn.shopify.com/s/files/1/0432/2259/7796/files/67426652614.pdf
    • https://cdn.shopify.com/s/files/1/0427/8448/9631/files/sidezegiko.pdf
    • https://cdn.shopify.com/s/files/1/0428/5513/7447/files/27957340476.pdf
    • https://cdn.shopify.com/s/files/1/0429/5265/5002/files/64219808307.pdf
    • https://cdn.shopify.com/s/files/1/0432/3128/1312/files/lotuzurewodeme.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/texojorigerusoxuduk.pdf
    • https://cdn.shopify.com/s/files/1/0431/0925/3286/files/bezuxajuwowidagabun.pdf
    • https://cdn.shopify.com/s/files/1/0433/4940/9960/files/airway_bill_sample.pdf
    • https://cdn.shopify.com/s/files/1/0434/8752/7078/files/36454354009.pdf
    • https://cdn.shopify.com/s/files/1/0436/0765/4563/files/64284745193.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_off00004e54.bin
6fd525909a3bf99b42549b375f8789b12d3228d90b0bae79dd7d9928a2b8ec33		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E54 4972 bytes
font_01_sfnt_off00005ef4.bin
cda4982c56eaca38dd72ded98d80e553fee151260c71f683607df0a076957a23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EF4 9920 bytes
font_02_sfnt_off0000810c.bin
fadbcb98d8f1d62e9813a7609f5fb4a164c0f07ae0437f2e84255f631a10dc0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x810C 16096 bytes
font_03_sfnt_off000095d3.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95D3 4324 bytes

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