Malicious PDF — malware analysis report

Static analysis result for SHA-256 9787b654c3c35266…

MALICIOUS

PDF

42.0 KB Created: 2020-08-15 04:42:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9babacf7bea7cf32ebb34caa98c3ed55 SHA-1: e0acce4803f24cdb57f6147bc012361c7abda817 SHA-256: 9787b654c3c35266b60320dae6ebc8634d11d3c6a74939bfa5e90f66a0797842
202 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that points to 'ttraff.ru', disguised with a lure related to 'best ps2 emulator for android phone'. It also functions as a link farm, embedding numerous external PDF links, many hosted on Shopify. The presence of a visual download button further supports the social engineering aspect of this attack.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=best+ps2+emulator+for+android+phone In PDF document text
    • http://files.ckmsband.org/uploads/1/3/1/3/131380596/logetileraj_vebawok_xazuzapeluwovej_bibiwivoxi.pdfIn PDF document text
    • http://files.nassaucountynyhomes.com/uploads/1/3/0/8/130814466/furidebemivif_lileruvoxewenaj.pdfIn PDF document text
    • http://files.wisdombytheletter.com/uploads/1/3/2/6/132682806/87017727277ddfe.pdfIn PDF document text
    • http://pamipive.solesearchingsoul.com/uploads/1/3/1/4/131407406/2b18304.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/1/0434/2136/8482/files/20478965721.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4655/2227/files/90154324182.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0107/0247/files/86204462475.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/openvpn_duplicate-_cn.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0183/9769/files/99172914621.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1427/3698/files/gezomofupapupode.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4115/2421/files/lamination_sheets_colours_in_pakistan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0506/6913/files/rifuzunekedowit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4392/1820/files/290577958.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7230/7875/files/wabifivikajulodixozadef.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006617.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6617 5464 bytes
SHA-256: efa4393d2e0437f420e56684ce3cc76200126b08a6bbb58fd75d48c332dd2e80
font_01_sfnt_off00007882.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7882 10208 bytes
SHA-256: 2849bdf172863aefcc9676f1c48fed706e729078d8e9cef03eeed76c94a40849