Malicious PDF — malware analysis report

Static analysis result for SHA-256 3507fe33a4cc5483…

MALICIOUS

PDF

41.4 KB Created: 2020-08-16 19:29:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e8191048977cc740e194a3a215a21456 SHA-1: 71047ae139f144c53fe25404f29963091cf0ec2f SHA-256: 3507fe33a4cc54832ef60d96501d73129a269a8e5e238a1ce28a8488382f02fc
154 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many pointing to Shopify domains, which is characteristic of a link farm. One of these links, https://ttraff.ru/pify?keyword=autograph+hd+movie++tamilyogi, is identified as a malicious redirector. This suggests the document's primary purpose is to lure users to malicious sites through a deceptive link structure, potentially for phishing or malware distribution.

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.ru/pify?keyword=autograph+hd+movie++tamilyogi
    • http://files.addresspriceright.com/uploads/1/3/0/7/130740524/822b3f.pdf
    • http://files.frontrangeautism.com/uploads/1/3/0/8/130814515/4836051.pdf
    • http://files.hhomeh.com/uploads/1/3/2/7/132740614/4fd6f1d0751ef5.pdf
    • https://cdn.shopify.com/s/files/1/0434/0475/5096/files/turosexok.pdf
    • https://cdn.shopify.com/s/files/1/0430/3598/4029/files/wawipekesidurisuvi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8475/0743/files/63908029223.pdf
    • https://cdn.shopify.com/s/files/1/0427/5775/0951/files/masise.pdf
    • https://cdn.shopify.com/s/files/1/0440/6503/0309/files/stealth_attraction_techniques.pdf
    • https://cdn.shopify.com/s/files/1/0427/8091/7926/files/wikudorejazaref.pdf
    • https://cdn.shopify.com/s/files/1/0429/8155/6375/files/83902707321.pdf
    • https://cdn.shopify.com/s/files/1/0431/7567/4014/files/sativuvibu.pdf
    • https://cdn.shopify.com/s/files/1/0437/1854/1480/files/circular_motion_definition.pdf
    • https://cdn.shopify.com/s/files/1/0430/0849/1673/files/87511893771.pdf
    • https://cdn.shopify.com/s/files/1/0432/5156/4707/files/kayla_itsines_2._0.pdf
    • https://cdn.shopify.com/s/files/1/0432/9875/0619/files/boguvoxome.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a6b.bin
a1b846d815a1f1bd3f178f50d449a35e9743571b57ae85313a8f479f4174d557		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A6B 5124 bytes
font_01_sfnt_off00005be1.bin
65edcc391efe5b9dcd6b427fd7732f5912b66260e8edc4453f84b556fb1397a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BE1 3232 bytes
font_02_sfnt_off000068e0.bin
dc5a6aaa7f22fe2808071d282cc54c3c2bc062ad8c457f602a4ede50f19a23b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68E0 9800 bytes
font_03_sfnt_off00008a4d.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A4D 4324 bytes

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