Malicious PDF — malware analysis report

Static analysis result for SHA-256 322089fa08d794ed…

MALICIOUS

PDF

48.9 KB Created: 2020-08-21 17:54:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e0b22eba20ae6d515b4909949234eac2 SHA-1: 0e84d9447f2f0f72540fb9033d3aba5c26185f01 SHA-256: 322089fa08d794ed5c6a7dfee9bfaacd4759ebae32a51d3de733bbfbaadcfa7c
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=payback+1995+movie++300mb'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on cdn.shopify.com. The document body, though partially corrupted, contains the same redirector URL and references to other PDF files, reinforcing the malicious intent of directing users to external, potentially harmful content. No scripts were extracted from this sample.

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=payback+1995+movie++300mb
    • http://files.energizingmission.com/uploads/1/3/0/7/130775707/tafofi-degijebivefadep-funadejolejil-foguwixi.pdf
    • http://figudino.plasticfreegreece.com/uploads/1/3/0/7/130776021/mezug.pdf
    • http://lorak.teih.org/uploads/1/3/1/4/131482976/1574108.pdf
    • https://cdn.shopify.com/s/files/1/0434/5570/9341/files/savinurodabarizedunim.pdf
    • https://cdn.shopify.com/s/files/1/0430/5754/5365/files/kowobikujo.pdf
    • https://cdn.shopify.com/s/files/1/0436/5733/0853/files/50455747948.pdf
    • https://cdn.shopify.com/s/files/1/0433/6926/7354/files/zaditejasakofewisopuked.pdf
    • https://cdn.shopify.com/s/files/1/0432/7053/7374/files/koture.pdf
    • https://cdn.shopify.com/s/files/1/0429/8863/4266/files/cheat._db_ppsspp_android_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/2095/1445/files/xopogopebu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0393/5900/files/protagonist_vs._antagonist_definition.pdf
    • https://cdn.shopify.com/s/files/1/0440/2642/9605/files/63095089245.pdf
    • https://cdn.shopify.com/s/files/1/0431/0774/5958/files/toviwagonapijuzedopibobo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0069/1866/files/oceans_chords_c.pdf
    • https://cdn.shopify.com/s/files/1/0429/8375/1831/files/adobe_flash_player_for_chrome_mac.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_off00008197.bin
bffb3dee9b479e52feef5c0b677ff11e7d5df301022ab0e2d611a3e7bd72cfd5
pdf-font-stream PDF embedded font (sfnt) at offset 0x8197 5644 bytes
font_01_sfnt_off000094dd.bin
2c6a5cfe6ab1a59756b679791aa122585ba3c66b548fdde1fbad6cd2ea866486
pdf-font-stream PDF embedded font (sfnt) at offset 0x94DD 10024 bytes