Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf7933fcbdea0a39…

MALICIOUS

PDF

39.4 KB Created: 2020-08-04 19:12:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d8b8b45d47a0dd7b1430b86b0bb7c27e SHA-1: 677f229d90aa004caf0e2004580ac49e14ef9d73 SHA-256: cf7933fcbdea0a395c5f3ff4c7dbc9b8e7333c48f0ec5ff97c42f2d9548ac198
152 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary malicious redirector link to 'https://ttraff.cc/pify?keyword=bridal+march+vicente+avella+pdf'. The ML classifier strongly indicates maliciousness. The document body, though heavily obfuscated, contains references to the malicious URL and other Shopify-hosted PDFs, suggesting a lure to download further content or navigate to malicious sites.

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=bridal+march+vicente+avella+pdf
    • http://files.spencerfamilychurch.org/uploads/1/3/0/8/130874474/xusemulesaxakil-janowog-zoturak.pdf
    • http://easebodyworkandmassage.com/uploads/1/3/2/6/132682787/wijudijarutexu-ladin-nufebipipu-rawiro.pdf
    • http://files.nekitapilzphotography.com/uploads/1/3/0/8/130873781/6514734.pdf
    • http://files.thequeenofstaves.com/uploads/1/3/0/8/130814636/cdaa322.pdf
    • https://cdn.shopify.com/s/files/1/0435/1570/7551/files/favepotifabulani.pdf
    • https://cdn.shopify.com/s/files/1/0429/7680/5018/files/jumikujotenorolorazo.pdf
    • https://cdn.shopify.com/s/files/1/0432/9363/8811/files/vadokirazifux.pdf
    • https://cdn.shopify.com/s/files/1/0439/4123/2795/files/lowezovutij.pdf
    • https://cdn.shopify.com/s/files/1/0439/4031/5294/files/49450074648.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53741046047.pdf
    • https://cdn.shopify.com/s/files/1/0440/0034/6270/files/58322683654.pdf
    • https://cdn.shopify.com/s/files/1/0429/2204/9695/files/1614754247.pdf
    • https://cdn.shopify.com/s/files/1/0431/2812/7645/files/bedodatolaxaxomiguzi.pdf
    • https://cdn.shopify.com/s/files/1/0433/6982/4407/files/lijokosokawuvi.pdf
    • https://cdn.shopify.com/s/files/1/0430/1219/4463/files/nifunojo.pdf
    • https://cdn.shopify.com/s/files/1/0435/7629/5592/files/83337779122.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e82.bin
062a9bfea29ced5a1f384b113b8a3b01c453ed4c778993151ef58c0973408fba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E82 5004 bytes
font_01_sfnt_off00005f5b.bin
d79f188f810461d961a6530cfbcfcabc575dced9fb307c0f8f434dfd1f73096f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F5B 10268 bytes
font_02_sfnt_off0000827a.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x827A 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.