Malicious PDF — malware analysis report

Static analysis result for SHA-256 44156a6b45c2cf7a…

MALICIOUS

PDF

44.6 KB Created: 2020-09-11 08:11:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7df2d47326c2fb25f62e8efec689016c SHA-1: 72486ddc57884ce4f48eda712f4a7a099f6141d1 SHA-256: 44156a6b45c2cf7a13a31174b4dab54e48612a9c29b9958a9a5f16ddf603fadc
202 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.link/pify?keyword=bingo+live+for+pc+free'. This URL is embedded within the document body, alongside a large number of other PDF links, suggesting a link farm for SEO manipulation or to distribute malware. The document body text, though heavily obfuscated, contains the same lure phrase as the redirector URL, indicating an attempt to trick users into clicking the link for a fake download.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.link/pify?keyword=bingo+live+for+pc+free In PDF document text
    • http://files.graemation.nz/uploads/1/3/2/7/132740291/mukek-kuriposivuw-pesinu.pdfIn PDF document text
    • http://puben.hsrcfc.com/uploads/1/3/1/0/131070374/1758980.pdfIn PDF document text
    • http://files.barbechamblissauthor.com/uploads/1/3/0/7/130740563/3626560.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1916/5086/files/9500912351.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2168/0283/files/elatus_era_safety_data_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/7157/2885/files/sodakawuwavetakebo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7450/1273/files/77548407893.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/9426/2166/files/city_and_colour_runaway.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6795/7658/files/zopezumaropemafeleke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6576/1176/files/20371899561.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3564/0487/files/conjunciones_en_ingles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0490/8952/files/4256304635.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0185/6668/files/8400561450.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/efc97f_83ebff6e5f9245f18d6a442a8c3b5fce.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/0e2875_f5ba3536e9644ef098082b138349ba57.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ed2d23_9795c35294d44de98cc2316d848d2b01.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/cdfdba_dc10d41f94b84fb9a9138ea27e6ba8c2.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/479fa9_06d122179eed47ca8e376c7d7e016280.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: barbechamblissauthor.com 3 samples

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000071d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71D8 4904 bytes
SHA-256: b36152f70bff6c3987c6c4799c51e3063876ecc07d644820fbe78e7bf5ad953e
font_01_sfnt_off000082b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82B0 10128 bytes
SHA-256: 2bc121e7179ef2c44b449acce4ec85926ef0b2221b7284f86c1bf9a00ddb540d