Malicious PDF — malware analysis report

Static analysis result for SHA-256 6df16f65fff73a50…

MALICIOUS

PDF

44.1 KB Created: 2020-08-19 15:07:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5aa6c805f3b3f59c7c1edca576ef8b65 SHA-1: f63caa6c243ba5afced6ed9794db004f5eb67951 SHA-256: 6df16f65fff73a50e4d48873f7b7dad3eb5f1ce405241b369161f28dd8607df2
194 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 redirector infrastructure like 'ttraff.cc'. This suggests a link farm or phishing lure, disguised as a free download. The ML classifier strongly supports the malicious nature of this PDF. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.cc/pify?keyword=videos+website+template In PDF document text
    • http://jexot.display101.com/uploads/1/3/1/3/131380005/sozimikotufemem_suxabizolepid_funolaseviv_nujuk.pdfIn PDF document text
    • http://files.freedompaws.org/uploads/1/3/2/7/132740415/vigapuron.pdfIn PDF document text
    • http://files.arttimeinsight.net/uploads/1/3/2/6/132682899/zikud-kevufuzoziji-ragadixomipos.pdfIn PDF document text
    • http://files.dfwiscebs.org/uploads/1/3/0/9/130969790/tedusom-kidedezobur-bomovun-jiginudoja.pdfIn PDF document text
    • http://files.hourkidsmn.com/uploads/1/3/1/3/131382808/1ca88589.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7902/5318/files/adverbs_of_time_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2510/4028/files/99365725309.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3403/3824/files/can_i_put_an_animated_gif_in_a.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6524/4832/files/xubizobafuwewuzeweviwok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9881/6150/files/degakukob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7473/8586/files/21813428284.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4393/6673/files/buzofaza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7685/1614/files/9602539645.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0591/9903/files/beginner_s_guide_to_darkbasic_game_programming.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7230/5817/files/36775428205.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6876/5848/files/51817914710.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
🗂 Part of campaign: display101.com 4 samples

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61AE 4888 bytes
SHA-256: b84162c6233e9d37806415a3b562899d89274feb3b53ec58e3798b399889828e
font_01_sfnt_off0000725a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x725A 10284 bytes
SHA-256: b1bc0928efbfb5194aefe020b5d3ad1c9d1df261871590d78c2d100aa878ca0e
font_02_sfnt_off00009566.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9566 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2