Malicious PDF — malware analysis report

Static analysis result for SHA-256 27a110920a7bbfa9…

MALICIOUS

PDF

42.9 KB Created: 2020-08-11 02:53:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 56f3ca956217e3d22b6747524c3e4533 SHA-1: 4cb40c88038011f5f42a67e591abd1ca6e9e31d5 SHA-256: 27a110920a7bbfa9e4008ffa48623d9229553071b68fba2ca525070123a5df3f
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=exercicios+cations+e+anions+pdf'. This indicates the document's primary purpose is to lure users to a malicious site. The presence of numerous external PDF links, many hosted on cdn.shopify.com, suggests a link farm or SEO manipulation tactic to obscure the malicious redirector. No scripts were extracted from this sample.

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=exercicios+cations+e+anions+pdf In PDF document text
    • http://files.saxophonistforhire.co.uk/uploads/1/3/1/3/131378779/gatete.pdfIn PDF document text
    • http://files.sweetsouthernmessnc.com/uploads/1/3/1/1/131164272/6274062.pdfIn PDF document text
    • http://files.sachemeastlacrosse.com/uploads/1/3/0/9/130969356/nolexunerakusopivuj.pdfIn PDF document text
    • http://tamabobu.therawfoodgirl.com/uploads/1/3/1/3/131380505/guzojolajo.pdfIn PDF document text
    • http://kixinulow.mr-organics.eu/uploads/1/3/1/4/131453540/74986c.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/1/0428/0595/2671/files/woforirurebizisomirubak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8632/2600/files/oxford_english_pronunciation_dictionary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0895/8362/files/84676189021.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6032/0663/files/komed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5088/4505/files/73615201384.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3274/7927/files/redokamarodudivotufife.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5815/7982/files/sexomumefijomepetijita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4764/0469/files/femunolatisogulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8472/4889/files/boston_marathon_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7351/2359/files/gusujenegi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5511/9520/files/635717090.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 7

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_off0000694b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x694B 5144 bytes
SHA-256: 0a8cbaf7c7382d6f50c1a26092156f02f6232eb35e0cb848feea5dbb3dace62f
font_01_sfnt_off00007ad7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD7 10860 bytes
SHA-256: 0f3abe8b1e3ff0bd22133daecc7d25f878df506fab9fce03760356924b6aee8d

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