Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f851f2e84472c0a…

MALICIOUS

PDF

47.2 KB Created: 2020-08-20 22:01:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9eaec0e30200a878809d789ae7a602ff SHA-1: 540efe07cb0c497160559957bb9dbbd94bbea815 SHA-256: 7f851f2e84472c0abf810d11da1c41a72f7c6724d25089f2453c11e339c362ef
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body and embedded links suggest a tactic to drive traffic to SEO spam or phishing sites, masquerading as a resource for free templates. The presence of multiple PDF links further indicates a link farm strategy.

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=powerpoint+templates+free++2018+green
    • http://gidulosi.canadaclubtp.com/uploads/1/3/0/7/130739456/wawamoxorejo-tolokawofi-rezutafaxu-pixadolarukum.pdf
    • http://files.mountainvilleumc.com/uploads/1/3/0/9/130969862/7928901.pdf
    • http://files.wwdurantstory.com/uploads/1/3/0/9/130969260/bonosifusuz.pdf
    • http://files.rediscovermartinsville.org/uploads/1/3/2/6/132695883/6523059.pdf
    • http://xoxek.elementalascension.com/uploads/1/3/0/8/130874262/7635420.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0427/9291/1007/files/33373197656.pdf
    • https://cdn.shopify.com/s/files/1/0427/9291/1007/files/xijade.pdf
    • https://cdn.shopify.com/s/files/1/0432/7532/1499/files/96152379843.pdf
    • https://cdn.shopify.com/s/files/1/0430/1094/9273/files/jejukosebirowa.pdf
    • https://cdn.shopify.com/s/files/1/0428/1437/4054/files/46126528929.pdf
    • https://cdn.shopify.com/s/files/1/0436/9124/5733/files/dollar_tree_job_application_online.pdf
    • https://cdn.shopify.com/s/files/1/0430/9352/4637/files/51173966799.pdf
    • https://cdn.shopify.com/s/files/1/0438/3195/1517/files/mckenzie_method_back_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0431/2432/6566/files/68948635195.pdf
    • https://cdn.shopify.com/s/files/1/0432/4940/2024/files/dexosonudebifotan.pdf
    • https://cdn.shopify.com/s/files/1/0431/8042/5370/files/kofasigejijoka.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c8a.bin
3baf645e9047a0b3b93ada17d382b778379f554832aed98af6fb05112f116f81		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C8A 5620 bytes
font_01_sfnt_off00007f96.bin
03c0ece559c9a06805b4b1de8c75c28809585cf14ac1559443090bedac7b34b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F96 9896 bytes
font_02_sfnt_off0000a165.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA165 4324 bytes

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