Malicious PDF — malware analysis report

Static analysis result for SHA-256 014eadb96a253142…

MALICIOUS

PDF

44.3 KB Created: 2020-08-18 20:11:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69b82abf6a2cb6c71454891dfe353d9e SHA-1: 298aa08c249778853e44c13ca158ddeb73b50607 SHA-256: 014eadb96a2531429c789b6f9de63f2e852fd38cf054682821882c5926a375d4
154 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, identified as a link farm, with the primary URL pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the string 'Website templates psd free 2019' and the malicious URL, suggesting a lure to trick users into clicking on the links. The ML classifier also strongly indicated maliciousness.

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=website+templates+psd+free++2019
    • http://kikexed.bellereidfarm.com/uploads/1/3/1/4/131453109/novitisiwawob.pdf
    • http://xinazotot.wolfhunterjjc.com/uploads/1/3/0/7/130738970/f0bdf491.pdf
    • http://vaxedesif.nlxcakes.com/uploads/1/3/1/6/131607163/tupunirunizi-radazenesefa-livure-pinafub.pdf
    • http://files.blacksheepcontemporary.com/uploads/1/3/2/6/132695258/japumebon.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/68906731860.pdf
    • https://cdn.shopify.com/s/files/1/0429/0877/8663/files/rebekigaramofu.pdf
    • https://cdn.shopify.com/s/files/1/0432/4694/4416/files/97020725116.pdf
    • https://cdn.shopify.com/s/files/1/0433/8535/6449/files/necrose_caseosa_tuberculose.pdf
    • https://cdn.shopify.com/s/files/1/0439/3720/2344/files/tribute_page_freecodecamp.pdf
    • https://cdn.shopify.com/s/files/1/0439/3605/5454/files/fungsi_manajemen_actuating.pdf
    • https://cdn.shopify.com/s/files/1/0427/4877/2508/files/tunawujimoli.pdf
    • https://cdn.shopify.com/s/files/1/0434/2887/2359/files/96355795875.pdf
    • https://cdn.shopify.com/s/files/1/0430/1750/2869/files/59943447068.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_off00006e26.bin
e26df21995c388d075de43481048161e754468139311f4f381461ccbe59e6328
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E26 5820 bytes
font_01_sfnt_off000081e4.bin
40f30c024cf293a852f71f74bb5b8375a2e8f1ac4ed7dd29d64412f0cff581bc
pdf-font-stream PDF embedded font (sfnt) at offset 0x81E4 9948 bytes