Malicious PDF — malware analysis report

Static analysis result for SHA-256 7aa8bbd31236030f…

MALICIOUS

PDF

43.0 KB Created: 2020-08-01 08:50:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 97a538c05b19e62cacc56e6f5be34c4b SHA-1: bb821056198f7276964aa5e1d083c527d8124c19 SHA-256: 7aa8bbd31236030f173edae04eb9da2e709dccb7b595c78f1e7423eb15b23eba
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains numerous links, many of which point to a redirector service (ttraff.com) that is known to host malicious content. The document body, though heavily obfuscated, contains text related to 'Wega espresso machine maintenance' and the malicious URL, suggesting a phishing or scam lure. The presence of embedded links and the ML classifier's high confidence score indicate a malicious intent to redirect users to harmful infrastructure.

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.com/pify?keyword=wega+espresso+machine+maintenance In PDF document text
    • http://files.danielnistico.net/uploads/1/3/1/4/131407445/gufawonim-raxawuju-wivoxesi-gisizovexide.pdfIn PDF document text
    • http://files.windsurfingreligion.com/uploads/1/3/1/4/131453395/fopiku-fidololafa-maladase.pdfIn PDF document text
    • http://files.larissafall.com/uploads/1/3/2/6/132682731/a3aa317b67a4f.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/1/0429/5180/3033/files/wavegovamulofebijufimifok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5652/9565/files/sewepewulogiro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1381/5966/files/zefen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9173/9295/files/tinuruxumofon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8735/4270/files/15879878974.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7003/7924/files/97301859000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8153/9488/files/98246311699.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3815/4650/files/73456213066.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32177526878.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1427/3698/files/82090060342.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7259/3832/files/72723341820.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/wubojelesaxorar.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_off00006ab5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB5 5328 bytes
SHA-256: cfbef55876b9809e8d642115af029c1e851a27db4016a7996b5778c67da12751
font_01_sfnt_off00007cbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CBF 9948 bytes
SHA-256: 62007d81385c657b34bbfde0b59afd326f99011a632fa0b8d313e41640cc4798

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