Malicious PDF — malware analysis report

Static analysis result for SHA-256 adebe492c9d670fd…

MALICIOUS

PDF

39.7 KB Created: 2020-08-15 02:26:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2367f13fabc59d277d3bbab5ed58c84a SHA-1: 234050a8d357a80b52e379d078053b6bfc35c1fb SHA-256: adebe492c9d670fdd94d27062cbdbfc07cc1504cee8cb7e3133d9cf3c1bcd63e
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with a critical heuristic firing for a malicious redirector and a link farm. The primary malicious URL identified is https://ttraff.cc/pify?keyword=divine+all+songs+video, which likely serves as a gateway to further malicious content. The document body is heavily obfuscated, but the presence of numerous external links suggests an attempt to manipulate search engine results or distribute malware through a link farm.

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.cc/pify?keyword=divine+all+songs+video
    • http://mipuba.lakewoodmanor.ca/uploads/1/3/0/7/130740257/xigudo.pdf
    • http://files.healthyfeetkw.com/uploads/1/3/1/3/131381772/3063564.pdf
    • http://gubedibaz.chefsorenpedersen.com/uploads/1/3/1/4/131410538/3380009860.pdf
    • http://zikup.prmueller.co.uk/uploads/1/3/0/8/130813528/b19136357b.pdf
    • http://files.artisanoutdoorok.com/uploads/1/3/0/7/130740458/jovozevisulizejej.pdf
    • https://cdn.shopify.com/s/files/1/0435/1574/0312/files/zopozurikesusobuv.pdf
    • https://cdn.shopify.com/s/files/1/0441/3086/1208/files/ffxiv_act_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ferenap.pdf
    • https://cdn.shopify.com/s/files/1/0432/9367/1588/files/75834010688.pdf
    • https://cdn.shopify.com/s/files/1/0432/3151/0690/files/seredepuz.pdf
    • https://cdn.shopify.com/s/files/1/0428/4288/2215/files/vovunosajukabavi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7837/6853/files/29364286091.pdf
    • https://cdn.shopify.com/s/files/1/0429/5406/4028/files/36061391537.pdf
    • https://cdn.shopify.com/s/files/1/0428/5526/8519/files/dixie_chicks_setlist.pdf
    • https://cdn.shopify.com/s/files/1/0431/7839/3762/files/suits_s05e09_torrent.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_off00005d46.bin
7e58a20cd272fd990bf2b4f95b3dc389bc751ce5f3716e506a455be25aba87ea
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D46 4956 bytes
font_01_sfnt_off00006e3b.bin
73ccf29afea2dc2a908de110d606e4d91363ba08f1d929aa36d7d70c704620c4
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E3B 10540 bytes