Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e27d0797e50b3fc…

MALICIOUS

PDF

44.6 KB Created: 2020-08-15 02:49:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 27501894c3db411f964eda67f8393a32 SHA-1: f232ede16305c149c608797364158dd989d384a5 SHA-256: 3e27d0797e50b3fc290866050b9129e76e4c2d60f3b8122c9deeff86f8ce2408
154 Risk Score

Malware Insights

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

The PDF contains a prominent link to 'ttraff.com', identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL and other Shopify links, suggesting a link farm or lure. The heuristic firings confirm the presence of malicious redirector links and a link farm within the PDF. The primary intent appears to be directing the user to malicious infrastructure via a deceptive movie-related lure.

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=jabariya+jodi+full+movie+watch+online
    • http://mekiw.restonlibraryfriends.com/uploads/1/3/2/7/132710797/ximeroseg.pdf
    • https://cdn.shopify.com/s/files/1/0433/6451/6005/files/american_english_file_2_workbook_answer_key_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0441/2047/3752/files/73882012241.pdf
    • https://cdn.shopify.com/s/files/1/0432/6552/3870/files/milapikesatefuk.pdf
    • https://cdn.shopify.com/s/files/1/0429/3758/1734/files/mibubebineleditaxa.pdf
    • https://cdn.shopify.com/s/files/1/0437/8332/3806/files/tchaikovsky_swan_lake_piano.pdf
    • https://cdn.shopify.com/s/files/1/0437/5478/2869/files/vakamitaduzetop.pdf
    • https://cdn.shopify.com/s/files/1/0446/6016/2713/files/15476565115.pdf
    • https://cdn.shopify.com/s/files/1/0428/1335/8247/files/ccrn_review_book.pdf
    • https://cdn.shopify.com/s/files/1/0429/1058/0903/files/ostrich_farming_in_south_africa.pdf
    • https://cdn.shopify.com/s/files/1/0433/6690/8054/files/11485644661.pdf
    • https://bit.ly/2UaZz9k
    • 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_off00004c58.bin
f073271046462c14874c1693ee7717570e1b6b30234ef62f4e99136a0301aea8
pdf-font-stream PDF embedded font (sfnt) at offset 0x4C58 5424 bytes
font_01_sfnt_off00005ebb.bin
f927ac6d32650c4249865a14d5b6e91fea05f28edc55886e00ac57e8d70be078
pdf-font-stream PDF embedded font (sfnt) at offset 0x5EBB 10404 bytes
font_02_sfnt_off00008209.bin
4bd16c8abd39118228c1571b0005d4eb3b3e943e572fd92a2a80cfcb7b749349
pdf-font-stream PDF embedded font (sfnt) at offset 0x8209 16164 bytes
font_03_sfnt_off0000971e.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x971E 4324 bytes