Malicious PDF — malware analysis report

Static analysis result for SHA-256 04e444e291487def…

MALICIOUS

PDF

115.9 KB Created: 2020-08-13 04:06:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aea0636a82294a4f1834ee05d565cdd4 SHA-1: 826fe60532007aa9733050d8ed5a53aebc7f69d6 SHA-256: 04e444e291487def1a6ce65a87a125819884a0d3fe927d232d6ca541f3a77287
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm designed to redirect users to malicious infrastructure. The primary malicious URL identified is https://ttraff.ru/pify?keyword=good+aquaculture+practices+pdf, which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting a lure to a phishing or malware distribution site.

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=good+aquaculture+practices+pdf
    • http://gonir.safetygradelicensure.org/uploads/1/3/1/4/131453284/021193773df6ca.pdf
    • http://files.mattnevergivesup.org/uploads/1/3/1/8/131857758/seregudokupi-gezovi-sinodate.pdf
    • http://dosana.nssdoctors.com/uploads/1/3/2/8/132816036/d18dd3.pdf
    • http://files.townofclevelandal.com/uploads/1/3/1/8/131856326/bazemufuvofijuvi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.opentle.org
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0430/1740/4573/files/26252356119.pdf
    • https://cdn.shopify.com/s/files/1/0427/4877/2508/files/thomas_kuhn_copernican_revolution.pdf
    • https://cdn.shopify.com/s/files/1/0431/7714/8571/files/15676200962.pdf
    • https://cdn.shopify.com/s/files/1/0432/4976/2459/files/census_2020_affairscloud.pdf
    • https://cdn.shopify.com/s/files/1/0431/5804/4828/files/veobecn_a_anorganick_chmia_mogrovi.pdf
    • https://cdn.shopify.com/s/files/1/0437/6857/8210/files/kenya_census_2020.pdf
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/kifoka.pdf
    • https://cdn.shopify.com/s/files/1/0428/2603/9463/files/sadekodubewogedez.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kozaw.pdf
    • https://cdn.shopify.com/s/files/1/0435/2930/6272/files/introduction_to_data_structures_and_algorithm.pdf
    • https://cdn.shopify.com/s/files/1/0437/2591/4277/files/lowewonufadelobapejux.pdf
    • https://cdn.shopify.com/s/files/1/0434/1995/9463/files/patikugefoju.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
    • http://www.gnu.org/licenses/gpl.html

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000163b4.bin
7fdee344d9b0c16dff3a8bb2cf5779edb291aa8d2aeb1c1404a02a4f6523fc8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x163B4 5080 bytes
font_01_sfnt_off00017507.bin
b43b749ee9ffd4ca36eabbb5af6503c2471982878b0f0ef74541bcb6abf95619		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17507 6092 bytes
font_02_sfnt_off000184d9.bin
22ac3eb1f466661e07db2f161eba03942e8a619c0c342fcde4521c659e730c51		 pdf-font-stream PDF embedded font (sfnt) at offset 0x184D9 15336 bytes
font_03_sfnt_off0001b3d6.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B3D6 4324 bytes

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