Malicious PDF — malware analysis report

Static analysis result for SHA-256 a49f75be5c4bf972…

MALICIOUS

PDF

70.2 KB Created: 2020-03-14 13:13:30 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 3a9fd18a2f7f09a372e739b84e790164 SHA-1: b63192c3cc697593ef95f50dfee2df0204043ecd SHA-256: a49f75be5c4bf972a3d18d999713aa557093f1b361c496b871ea5c0accd7b8de
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, a technique often used for SEO poisoning or to distribute malicious content. The document body itself contains garbled text but includes a reference to 'Helios airways flight 522 accident report', which may be a lure. No scripts were extracted from this sample, limiting the ability to determine a specific payload or further actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://turneduplife.voyagerwebsites.com/uploads/1/3/0/5/130589427/130589427.html#helios+airways+flight+522+accident+report PDF link annotation
    • http://abmcilwaincpa.com/uploads/1/3/0/7/130740320/3385760.pdfIn PDF document text
    • http://sionyx-site.bsavvy.com/uploads/1/3/0/4/130476523/sananof.pdfIn PDF document text
    • http://solvingchemistry.com/uploads/1/3/0/6/130603935/wifag-jeraxolixezot-vajepi.pdfIn PDF document text
    • http://www.oletaqueria.com/uploads/1/3/0/7/130739349/5fcc8abceff.pdfIn PDF document text
    • http://fernandoelectricalservices.com/uploads/1/3/0/4/130475997/afc45.pdfIn PDF document text
    • http://coloradodieselrepairandfabrication.com/uploads/1/3/0/2/130287817/12895c613a2e6c.pdfIn PDF document text
    • http://www.karenthebard.com/uploads/1/3/0/3/130379115/2789206.pdfIn PDF document text
    • http://75-50-210-138.diamonddoorltd.com/uploads/1/3/0/4/130483041/f4e7946.pdfIn PDF document text
    • http://jsenn.net/uploads/1/3/0/2/130289721/pufag.pdfIn PDF document text
    • http://blesscedbeads.com/uploads/1/3/0/5/130550800/8edbb45dc52.pdfIn PDF document text
    • http://newhometelevision.com/uploads/1/3/0/6/130639812/kusefugiw.pdfIn PDF document text
    • http://kfitusaworkouts.com/uploads/1/3/1/0/131070508/9447818.pdfIn PDF document text
    • http://theneighborhoodbooks.com/uploads/1/3/0/4/130488530/1763310.pdfIn PDF document text
    • http://beeldschermverhuur.nl/uploads/1/3/0/7/130739247/8f25dd.pdfIn PDF document text
    • http://legacymusicca.com/uploads/1/3/0/5/130590714/nopajamu-bijuxipo-vonobatomadix.pdfIn PDF document text
    • http://californiahydrogenwater.com/uploads/1/3/0/2/130273578/df3ee079498863.pdfIn PDF document text
    • http://magicmesopatches.com/uploads/1/3/0/9/130969238/4e9b18f9664bd.pdfIn PDF document text
    • http://mta-sts.mail.characterats.com/uploads/1/3/0/8/130874235/kesanudiw-lomot-nasafevujudope-vagadajugerude.pdfIn PDF document text
    • http://quietfinance.com/uploads/1/3/0/6/130639220/xolivajolo-zigebuvobo-vokodoxono.pdfIn PDF document text
    • http://dmc-couriers.com/uploads/1/3/0/5/130543240/xeturikutowanugit.pdfIn PDF document text
    • http://ohioriverdriftwood.com/uploads/1/3/0/4/130483821/kibime.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b875.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB875 9348 bytes
SHA-256: 28a9dabfca33c57d23bda80b7877000ffd69507a2402ec3ebaf9df5a41a0c4c3
font_01_sfnt_off0000dae8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAE8 8460 bytes
SHA-256: a73d4c89d1c1d4ad6303189cf785bb2bb398164a350bc1d73181aedb98f7f23a
font_02_sfnt_off0000f345.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF345 16036 bytes
SHA-256: 779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63