Malicious PDF — malware analysis report

Static analysis result for SHA-256 036e84e1f126385f…

MALICIOUS

PDF

55.8 KB Created: 2020-07-24 20:12:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 34d276486b6629082c7d0c5ddcf49a01 SHA-1: af473d134c755438a7d59c58af10fd0f57b77abc SHA-256: 036e84e1f126385fa7fece6fbf134ae4dbbd81650a7e6b16b2755d4695cfe09d
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with the primary link pointing to a known malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' strongly indicate malicious intent. While no scripts were extracted, the structure suggests a lure to external malicious content, likely 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=promega+luciferase+reporter+assay
    • http://files.patriciagodden.com/uploads/1/3/1/4/131483019/5adf2.pdf
    • http://files.ccumc.us/uploads/1/3/0/9/130969220/faguxuzusafotut.pdf
    • http://files.michelprincebooks.com/uploads/1/3/0/7/130775277/5551867.pdf
    • http://files.iproclaimit.com/uploads/1/3/2/6/132681812/kogawagatisubom-negoguwoj-supuzowobasuj-zaxonugono.pdf
    • http://files.pegasuscharter.org/uploads/1/3/0/8/130814597/lixizu-jovasos.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/3741/7891/files/mojalitevakulododeki.pdf
    • https://cdn.shopify.com/s/files/1/0434/0029/8648/files/labikuma.pdf
    • https://cdn.shopify.com/s/files/1/0437/1791/8870/files/sinozefikenaganapo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/varuxarope.pdf
    • https://cdn.shopify.com/s/files/1/0433/6159/9643/files/46199230122.pdf
    • https://cdn.shopify.com/s/files/1/0427/8000/0422/files/56920074677.pdf
    • https://cdn.shopify.com/s/files/1/0433/2650/5118/files/45168094599.pdf
    • https://cdn.shopify.com/s/files/1/0430/3696/7063/files/bubukimupapovotukuf.pdf
    • https://cdn.shopify.com/s/files/1/0432/8305/4757/files/badazasosujizemewaxaduse.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.geocities.com/mitra_anirban/hobbies.htmGNU
    • http://www.gnu.org/copyleft/gpl.htmRegular

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007721.bin
3bc5fb277e57d37c883e7f41e11478e797f69fec23df978fc19e8d8ec33e25ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7721 5216 bytes
font_01_sfnt_off000088ef.bin
22e614f70662915bb741154388250ca1446fec442c811913ca938b54c1b095e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88EF 4900 bytes
font_02_sfnt_off000098e5.bin
fa98316bad0ee393e4244be63b1d230beb4724cf855be96ad4f2c87a5b302ae2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x98E5 2140 bytes
font_03_sfnt_off0000a2bf.bin
58b68ddc242eb2d63d5b44ceacaaa3f3e3b671a7b8127e28da055111dd198eaf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA2BF 14828 bytes

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