Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b90cac243a02827…

MALICIOUS

PDF

72.4 KB Created: 2020-08-08 02:55:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a562109f03d8488d4090aa317f51a819 SHA-1: 1bd983457b0fc569c62d68bf568a638a4bcbbd2c SHA-256: 4b90cac243a0282793f3dfd0d5bc74e43091693e6f4d3f06c346cbed30aa92a1
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. The primary malicious link identified is 'https://ttraff.cc/pify?keyword=ethiopian+airlines+crash+report+2020+pdf', which is a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Ethiopian airlines crash report 2020 pdf', suggesting a lure to entice users to click the malicious link.

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=ethiopian+airlines+crash+report+2020+pdf In PDF document text
    • http://wufilaj.carrollswcd.org/uploads/1/3/1/8/131856257/zuvar_lofuka_lulukutotu_wasamozaso.pdfIn PDF document text
    • http://files.catenazzilab.org/uploads/1/3/1/3/131380899/zubadowijo.pdfIn PDF document text
    • http://wedojal.mylifebuilder.org/uploads/1/3/1/1/131163658/nasanaxaxoted.pdfIn PDF document text
    • http://files.hannaconstruction.ca/uploads/1/3/1/8/131871633/ea037b25c1c9.pdfIn PDF document text
    • http://rewuto.maggiescaravan.com/uploads/1/3/1/4/131437657/tugulumi_rikugopajo_zajuguworunino_surijeruso.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/1/0428/2771/0630/files/muwanebepixevixolal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48054684450.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8451/3444/files/gedegeduzifap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7180/7381/files/waloxegoxulafobewobaki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8339/7272/files/46838393627.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4547/6762/files/basic_aquaponics_setup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/palafasejuzanuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8191/5802/files/nelibezuwarewamene.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9874/3719/files/vozojetizomirupogaxuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3818/7413/files/cogic_sunday_school.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5007/4269/files/38193837803.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9100/8419/files/rurofomukanev.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_off0000c59f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC59F 6116 bytes
SHA-256: 196c7d41b547b4788944a225599f3bb3c34e28e4174ceed1601ab5ac1680ca87
font_01_sfnt_off0000dac9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAC9 5472 bytes
SHA-256: 834b489db7a7db96c049389f675d76b48a7d8f64f65b6afe30963bad98cd8aa8
font_02_sfnt_off0000ed62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED62 11628 bytes
SHA-256: 55307499f46af4f135e9c22e7e739abe9626e00d4ec3eac30ed914d414192bb6