Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3eb5d2d7cb035f3…

MALICIOUS

PDF

37.0 KB Created: 2020-08-22 18:13:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d1826db937b7e2a15e5b897e57fce288 SHA-1: 686df80059b16e06e21367fdda062ffb30211554 SHA-256: c3eb5d2d7cb035f3989b4dcea5919d4523e2b625cdac418f697fd5012dc7b44c
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a malicious redirector link disguised as a Netflix promotion, aiming to trick users into clicking it. The link leads to `https://ttraff.com/pify?keyword=netflix+para+android+auto`, which likely serves as a gateway to further malicious content. The document also hosts a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic to distribute the malicious content.

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=netflix+para+android+auto
    • http://popaduku.abbymenagerie.com/uploads/1/3/1/4/131438474/a32117a2e.pdf
    • http://vuxiwum.jarrettwoods.com/uploads/1/3/2/7/132710621/kowasomuvukagu.pdf
    • http://tibidot.cs4il.org/uploads/1/3/1/4/131407278/nelujexoxeku.pdf
    • https://cdn.shopify.com/s/files/1/0433/7870/4549/files/wotafafogaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/9482/6396/files/59690782698.pdf
    • https://cdn.shopify.com/s/files/1/0431/8094/9659/files/90331297137.pdf
    • https://cdn.shopify.com/s/files/1/0432/2947/9076/files/53399056543.pdf
    • https://cdn.shopify.com/s/files/1/0428/2092/7655/files/lopifiz.pdf
    • https://cdn.shopify.com/s/files/1/0432/0450/9853/files/sifusanavuketepo.pdf
    • https://cdn.shopify.com/s/files/1/0432/4805/8536/files/49748800868.pdf
    • https://cdn.shopify.com/s/files/1/0433/8502/8764/files/muvawegorevifon.pdf
    • https://cdn.shopify.com/s/files/1/0436/0765/4563/files/peter_pan_syndrome.pdf
    • https://cdn.shopify.com/s/files/1/0434/4466/6529/files/ekahau_sidekick_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0436/4809/0270/files/mazobegozizisubumaririv.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_off00005429.bin
30d2331d0dee5835410afecbb67e076383ed7eee35945c5e892d22c3d00d535c
pdf-font-stream PDF embedded font (sfnt) at offset 0x5429 4892 bytes
font_01_sfnt_off000064e6.bin
c7334237627773e27f4a4da56532cc78254f937a494f0f2c7d892c26d8f416c2
pdf-font-stream PDF embedded font (sfnt) at offset 0x64E6 9988 bytes