Malicious PDF — malware analysis report

Static analysis result for SHA-256 f039d3efd81d1a76…

MALICIOUS

PDF

57.7 KB Created: 2020-08-14 09:08:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1daa81367dbf08608a99b653bd978a5c SHA-1: a1a62a4eb2a885260c6e0c4b6f1894c5f817c37d SHA-256: f039d3efd81d1a768d3c9194d4cdb02e6e8894784302f1b2de9b497ae26fa5d9
152 Risk Score

Malware Insights

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

The PDF contains numerous external links, a technique often used to redirect users to malicious sites. Specifically, it links to a known malicious redirector at 'ttraff.ru' and also includes a large number of links to other PDFs hosted on Shopify, suggesting a link farm for SEO manipulation or traffic redirection. The ML classifier 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=astrologian+guide+ffxiv+4.+2
    • http://files.louiseartist.com/uploads/1/3/1/3/131383305/a7116c1484.pdf
    • http://files.sandbachosteopaths.com/uploads/1/3/0/9/130969992/2415842.pdf
    • http://files.caribbeandreamsconcert.com/uploads/1/3/1/8/131856492/butadano-ketuzupifil-zovujovolow-zadudobax.pdf
    • http://files.musiccitygoldendoodles.com/uploads/1/3/2/6/132696122/9422483.pdf
    • http://files.mthja.com/uploads/1/3/1/3/131381850/lawefetagomonof.pdf
    • https://cdn.shopify.com/s/files/1/0438/0708/0610/files/3169107468.pdf
    • https://cdn.shopify.com/s/files/1/0435/5712/6295/files/livejiluletaguvemis.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/a_whole_new_world_piano_sheet_music_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/9468/8412/files/renaledotejurip.pdf
    • https://cdn.shopify.com/s/files/1/0430/7002/9975/files/mp4_to_amv.pdf
    • https://cdn.shopify.com/s/files/1/0438/6881/5528/files/beyonce_lemonade_album_download_free_mp3.pdf
    • https://cdn.shopify.com/s/files/1/0440/3950/4022/files/ski_resort_tycon.pdf
    • https://cdn.shopify.com/s/files/1/0432/9324/5590/files/32302256235.pdf
    • https://cdn.shopify.com/s/files/1/0428/9894/8255/files/zevonudujojetiv.pdf
    • https://cdn.shopify.com/s/files/1/0434/8195/6518/files/81968831154.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000094d3.bin
557e9992eccfef1ba1965c2e5a53023e0e3a0524c5c8b50e818fe69093a821c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94D3 5324 bytes
font_01_sfnt_off0000a70b.bin
354814201bbdb475a04ff456db403cafae7a49d939790f534edf7601a7f8ada8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA70B 10620 bytes
font_02_sfnt_off0000cb43.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCB43 4324 bytes

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