Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a9828e6d9f43b6c…

MALICIOUS

PDF

43.5 KB Created: 2020-08-25 02:16:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5409af9d6fb8c020ab60235f7e928edf SHA-1: 8cb59bafbac741cba86e0f32f263764f01f70903 SHA-256: 2a9828e6d9f43b6c0ffa6092355a4f4c671413e709559684d550d4fdfe26f784
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, which is indicative of a link farm. One critical heuristic identified a link to a known malicious redirector, traff.cc, which further suggests malicious intent. The document body contains garbled text but also includes the same redirector URL, reinforcing its role in the attack. The primary goal appears to be SEO manipulation or user redirection to potentially 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=consumer+reports+electrolux+canister+vacuum In PDF document text
    • http://files.lifestylerant.com/uploads/1/3/1/4/131437131/ebcb9f13.pdfIn PDF document text
    • http://dobopi.ditcheatchurch.org/uploads/1/3/1/6/131606289/nawabejerirok_xiverej_zogoworoz_nojuz.pdfIn PDF document text
    • http://rawikobu.smilingaviation.com/uploads/1/3/1/6/131637136/1466937.pdfIn PDF document text
    • http://somuf.branfordbecc.org/uploads/1/3/1/6/131606289/7430680.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/1/0441/3492/4440/files/gagelusokus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1310/9917/files/14892626786.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3694/2231/files/55592165455.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tikifulodu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2991/4012/files/biota_laut_yang_dilindungi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7710/5832/files/steuererklrung_anlage_vorsorgeaufwand_2017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2496/2968/files/xusozasaguvez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/4140450311.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2159/6834/files/71651133616.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0381/3781/files/velozo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2652/0986/files/movie_and_tv_show_apk_for_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2371/8805/files/78385961420.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8610/9086/files/romancing_the_balance_sheet_book_free_download.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

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B88 5112 bytes
SHA-256: 7303d31d9d7898508f203130f4fc74664e35ceb498599b8f84387ba12dbc624b
font_01_sfnt_off00007cd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CD5 10724 bytes
SHA-256: 57c488773062ff433cb7ea32d111fa5651b52918a8670cf5788d27792b9eaeaf

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