Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f9af606a1e56e17…

MALICIOUS

PDF

51.6 KB Created: 2020-07-20 01:28:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0b654c179ab76d5bb56ec8a8cb4eb583 SHA-1: 2076a6132c2efecc92af3e4fed7d2e5fc85d1b13 SHA-256: 5f9af606a1e56e175dd71d3b3eade42d323f527a00e5385ba174cb27cf5cec7c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to redirector infrastructure or potentially malicious domains. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags a link to traff.com, indicating a redirection to harmful content. The PDF_SEO_LINK_FARM heuristic further suggests a deliberate attempt to create a link farm, likely for SEO manipulation or to distribute malicious payloads through a large number of URLs.

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/wb?keyword=6-1%20practice%20angles%20of%20polygons%20worksheet%20answers
    • http://files.challengerlures.com/uploads/1/3/0/7/130739232/loxud.pdf
    • http://files.belinktrans.info/uploads/1/3/1/3/131379174/5427963.pdf
    • http://files.bosticklawoffice.com/uploads/1/3/1/4/131453967/36b381.pdf
    • http://files.positivescanning.com/uploads/1/3/1/0/131071137/vuxalavezimuwiwafod.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/3724/6118/files/tigoperebolalipabivogep.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/74535711799.pdf
    • https://cdn.shopify.com/s/files/1/0427/9032/2342/files/zidofakotuworasogozobon.pdf
    • https://lanokegid.files.wordpress.com/2020/07/femoxasiverenegidujuwi.pdf
    • https://kufopamasez.files.wordpress.com/2020/06/fafojetiduze.pdf
    • https://nalakemad.files.wordpress.com/2020/06/67084682029.pdf
    • https://vavokoze.files.wordpress.com/2020/07/wizob.pdf
    • https://fipoxek.files.wordpress.com/2020/07/jilepomazugasafivotimo.pdf
    • https://cdn.shopify.com/s/files/1/0427/7361/0663/files/6116918478.pdf
    • https://cdn.shopify.com/s/files/1/0429/2476/9436/files/xopusowore.pdf
    • https://cdn.shopify.com/s/files/1/0431/2917/6232/files/perarotoxejabifabexaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/24413790208.pdf
    • https://cdn.shopify.com/s/files/1/0430/6042/8962/files/96735436668.pdf
    • https://cdn.shopify.com/s/files/1/0427/4946/0636/files/69578474315.pdf
    • https://cdn.shopify.com/s/files/1/0432/1935/3757/files/8077125287.pdf
    • https://cdn.shopify.com/s/files/1/0434/0826/1285/files/81126318311.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008a54.bin
b0504ac46840ce0ee4f168dd47d9e9b942080a9cc688df97acd9341f95a473ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A54 5468 bytes
font_01_sfnt_off00009cf8.bin
863ba3d6036f9d2a646128861f4a893bbd35f05a2d7885fdec9cfe4ef281d888		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CF8 10508 bytes

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