Malicious PDF — malware analysis report

Static analysis result for SHA-256 265da873d8da89e0…

MALICIOUS

PDF

46.3 KB Created: 2020-08-14 14:58:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 41874bdc17daaacfffb9b33aa53c98b3 SHA-1: 5ee03b3f71c53b29ddc5ad2ece8e6b4f7971fbf7 SHA-256: 265da873d8da89e09343cf48d4934c4af71ffe34279b92402a3aa4ba594b25b4
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it is a malicious redirector, linking to a URL that appears to be part of a link farm. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/pify?keyword=free+music+s+for+iphones+offline, which is likely intended to lure users with a promise of free music for iPhones. This URL is the primary indicator of malicious intent, likely leading to further malicious content or phishing attempts.

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.ru/pify?keyword=free+music+s+for+iphones+offline In PDF document text
    • http://files.notesfromseniortraveler.com/uploads/1/3/1/3/131383512/2aa078748e24a.pdfIn PDF document text
    • http://files.maidtoshineservices.net/uploads/1/3/1/4/131437268/29f33e.pdfIn PDF document text
    • http://files.smartmobilityinc.com/uploads/1/3/1/4/131453821/kafagixasojavape.pdfIn PDF document text
    • http://files.revelbeautybar.com/uploads/1/3/1/3/131379375/7133445.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/1/0430/7605/9290/files/53308621592.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4157/8399/files/arabic_english_keyboard.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2123/6384/files/pixuwezen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3482/9223/files/wakoxuvugowapajepa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7795/8822/files/xaxixavatovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5131/7408/files/livasikajuxevalivi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6782/4533/files/bunefijegetenopafofap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7314/2935/files/coronary_heart_disease_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7013/6230/files/letter_tracing_workbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4801/8855/files/arduino_basic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vebamuwonodivori.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3136/2725/files/46964741054.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ace.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ACE 4804 bytes
SHA-256: 13de8c364414ddbd6b27bfff8f427c3a526b98377a6b9e027d50758813e15a67
font_01_sfnt_off00007aee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AEE 10244 bytes
SHA-256: 5162b495ff7c29c1b2720683c80d7238f2a17a8ba3cded42cad6ed43ccdfcb69
font_02_sfnt_off00009e07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E07 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361