Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed715f7329edeb05…

MALICIOUS

PDF

37.7 KB Created: 2020-08-02 00:29:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f7690958319ad1b0e69774ff4ba4db38 SHA-1: 3f1a45f50e9d8b8fe3db755ab252553633e9659e SHA-256: ed715f7329edeb057a1ac9fbb3c83d4d210f14e51ca56b6118a8bca20a07f08d
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'rope rescue manuals pdf' and a URL that points to the same redirector. This suggests a phishing or social engineering attack aiming to lure users to malicious infrastructure.

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=rope+rescue+manuals+pdf
    • http://files.crownedbyposh.com/uploads/1/3/0/7/130776645/7afddcf7ae4af.pdf
    • http://files.decatursistercities.com/uploads/1/3/1/4/131438111/jimefizine-wupemimalu-tadarunafabob.pdf
    • http://files.miscellaneoussushi.com/uploads/1/3/0/8/130814017/nejexirove-pujozivopemim-papipipuxiv.pdf
    • http://files.herecomesthyguide.com/uploads/1/3/1/4/131453022/eaebc6b.pdf
    • https://cdn.shopify.com/s/files/1/0428/4894/4295/files/vixol.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vuvitew.pdf
    • https://cdn.shopify.com/s/files/1/0432/2213/9041/files/56150881616.pdf
    • https://cdn.shopify.com/s/files/1/0428/3950/7100/files/27324848298.pdf
    • https://cdn.shopify.com/s/files/1/0434/5276/0224/files/32716431444.pdf
    • https://cdn.shopify.com/s/files/1/0434/0937/5383/files/xiwiz.pdf
    • https://cdn.shopify.com/s/files/1/0429/8866/7039/files/1346948606.pdf
    • https://cdn.shopify.com/s/files/1/0430/6042/8962/files/18591576478.pdf
    • https://cdn.shopify.com/s/files/1/0431/8072/0294/files/jizevasez.pdf
    • https://cdn.shopify.com/s/files/1/0435/0545/1174/files/22030119917.pdf
    • https://cdn.shopify.com/s/files/1/0434/8379/1517/files/vixojojazemedugamuw.pdf
    • https://cdn.shopify.com/s/files/1/0429/6150/2374/files/marazometi.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_off0000574a.bin
fcbc53727529441d14dc2afdc30769af2c1f15dc4a1eff7e0964d335822bbb89
pdf-font-stream PDF embedded font (sfnt) at offset 0x574A 5308 bytes
font_01_sfnt_off00006942.bin
a8bc02555de456a678ba91f19da8690858278a57d522c07cb87a110d5d786a03
pdf-font-stream PDF embedded font (sfnt) at offset 0x6942 9620 bytes