Malicious PDF — malware analysis report

Static analysis result for SHA-256 18f23fdc68a7ab9c…

MALICIOUS

PDF

45.2 KB Created: 2020-08-21 17:54:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c821cc3e8dc6f65d870ea6ae3f204df2 SHA-1: c69da6882ca3c0c843618934f7846d7a66663c60 SHA-256: 18f23fdc68a7ab9c36a64866fd4677f66c9eb6d37a4cf571a34406d61f26f713
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=hp+smart+app++for+windows'. This suggests the document is designed to lead users to malicious infrastructure, likely for phishing or malware distribution. The ML classifier also strongly flagged this PDF as malicious.

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/pify?keyword=hp+smart+app++for+windows
    • http://figimuxep.sunsetskinboutique.com/uploads/1/3/1/4/131454215/nazile.pdf
    • http://nuwizugep.britanniabeachcommunity.org/uploads/1/3/2/3/132302955/791b5d06262db7.pdf
    • http://files.sparrbc.org/uploads/1/3/1/6/131606118/c583389e27f1.pdf
    • http://files.estherpenelope.com/uploads/1/3/0/8/130874646/rulenudofa-tefogadubimob.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0432/0890/0772/files/41688958793.pdf
    • https://cdn.shopify.com/s/files/1/0431/3497/6157/files/28649144108.pdf
    • https://cdn.shopify.com/s/files/1/0431/7685/3664/files/3677521846.pdf
    • https://cdn.shopify.com/s/files/1/0433/2738/9851/files/birotukevebiwejibesexula.pdf
    • https://cdn.shopify.com/s/files/1/0437/0818/6792/files/campbell_biology_9th_edition_textbook_ebook_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/6983/1323/files/old_picsart_app.pdf
    • https://cdn.shopify.com/s/files/1/0432/9229/5333/files/serway_college_physics_10th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0434/5505/3989/files/fivosowa.pdf
    • https://cdn.shopify.com/s/files/1/0435/2468/5975/files/subozilogot.pdf
    • https://cdn.shopify.com/s/files/1/0427/8091/7926/files/list_of_b_pharm_colleges_in_tamilnadu.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_off000066d9.bin
f939075639a2dbab14b902104f0ee43f5c38ee14ad99e74cef380ad163154d91		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66D9 4876 bytes
font_01_sfnt_off0000774b.bin
277bd057abd48c2877bfcc21ff601334a6acda594caff0ca7934e052015af7f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x774B 9988 bytes
font_02_sfnt_off0000997b.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x997B 4324 bytes

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